Word.ws English Dictionary

13-Letter Words Starting with S

There are 231 thirteen-letter words that start with S on Word.ws, from saccharomyces to systemization. The most common are significantly, sophisticated, substantially, strengthening and specification.

Meanings from Wiktionary. Not an official Scrabble, Words With Friends or Wordle word list.

All 231 thirteen-letter words that start with S

SA

  • saccharomyces27n. Any of many single-celled fungi of the genus Saccharomyces, which lack...
  • sacramentally20adv. In a sacramental manner.
  • sacrificially23adv. In a sacrificial manner.
  • sadomasochism23n. The practices of sadism and masochism collectively, usually in...
  • sadomasochist21n. A person who enjoys both inflicting and receiving pain for sexual...
  • salmonellosis15n. Any of several diseases caused by infection with Salmonella bacteria.
  • salpingectomy23n. The surgical removal of one or both fallopian tubes, usually performed...
  • sanctimonious17adj. Making a show of being morally better than others, especially...
  • sarcastically20adv. In a sarcastic manner.

SC

  • scarification20n. The act of scarifying: raking the ground harshly to remove weeds, etc.
  • scatterometer17n. A form of radar used to measure surface winds from satellites, by...
  • schadenfreude23n. Malicious enjoyment derived from observing someone else's misfortune...
  • schematically25adv. In the manner of a schematic. Drawn or described rather than an example.
  • schizophrenia32n. A psychiatric diagnosis denoting a persistent, often chronic, mental...
  • schizophrenic34adj. Of or relating to schizophrenia.
  • scholasticism22n. A tradition or school of philosophy, originating in the Middle Ages...
  • schoolteacher23n. A teacher working in a school.
  • scintigraphic23adj. Of or pertaining to scintigraphy.
  • scintillating16adj. That scintillates with brief flashes of light; sparkling.
  • scintillation15n. A flash of light; a spark.
  • scleractinian17adj. Of, pertaining to, or characteristic of the corals of the order...
  • sclerotherapy23n. A treatment for varicose veins, hemorrhoids, and ulcers involving an...
  • screencasting18n. The use of screencasts.
  • screenwriting19n. The art of writing screenplays.
  • scriptwriting21n. The writing of scripts, usually for film or television.
  • scrutineering16n. The duties of a scrutineer; the action of the verb to scrutineer.

SE

  • searchability23n. The state of being searchable.
  • seaworthiness19n. The property of a watercraft that makes it fit to go to sea.
  • secretaryship23n. A person's term in office with a title including the term secretary...
  • secretiveness18n. The state or characteristic of being secretive.
  • sedevacantist19n. Someone who espouses sedevacantism.
  • sedimentation16n. The separation of a suspension of solid particles into a concentrated...
  • sedimentology20n. The study of natural sediments and of the processes by which they are...
  • seductiveness19n. The property of being seductive.
  • seismographic23adj. Relating to seismography and seismology.
  • seismological18adj. Relating to seismology.
  • selectiveness18n. The state of being selective; discernment.
  • selenographic21adj. Of or pertaining to selenography, the scientific study of the moon.
  • semiclassical19adj. That is classical but has broad, popular appeal.
  • semiconductor20n. A substance with electrical properties intermediate between a good...
  • semiconscious19adj. Neither fully conscious nor unconscious, partially aware but confused...
  • semiempirical21adj. Partially empirical (and partially theoretical).
  • semipermanent19adj. Neither temporary nor entirely permanent; of indefinite duration.
  • semipermeable21adj. Permeable to some things and not to others, as a cell membrane which...
  • semisynthetic23adj. Synthesized by chemically modifying a natural material.
  • sensationally16adv. In a sensational manner.
  • senselessness13n. The state of being senseless; unsense.
  • sensibilities15n. Capabilities to have emotions; feelings.
  • sensitiveness16n. The quality or degree of being sensitive.
  • sensitization22n. The process of making something sensitive.
  • sensorineural13adj. Of or pertaining to the sensory nerves.
  • sententiously16adv. In a sententious manner, concisely, pithily.
  • sentimentally18adv. In a sentimental manner.
  • sequestration22n. The process or act of sequestering; a putting aside or separating.
  • serendipitous16adj. By serendipity; by unexpected good fortune.
  • serialization22n. The process or action of converting something in a serial or into...
  • serologically19adv. With respect to the analysis of blood.
  • serpentinized25adj. Partially or completely converted into the secondary mineral serpentine.
  • servicemember24n. One who serves in the armed forces.
  • sesquiterpene24n. Any terpene formed from three isoprene units, and having fifteen carbon...

SH

SI

  • sideroblastic18adj. Relating to sideroblasts.
  • sidescrolling17adj. That scrolls horizontally.
  • sigmoidoscopy24n. Internal examination of the sigmoid colon.
  • signalization23n. The process of signalizing; characterization or differentiation.
  • significantly22adv. In a significant manner or to a significant extent.
  • signification19n. The act of signifying, or something that is signified; significance.
  • significative22adj. That tends to signify or indicate; indicative.
  • siliciclastic19adj. Describing clastic rocks that bear quartz or similar silicate minerals.
  • silvicultural18adj. Of, pertaining to, or obtained by silviculture.
  • situationally16adv. In a situational way.

SK

  • skateboarding21n. The act of riding on a skateboard.
  • skeuomorphism26n. The incorporation of obsolete or skeuomorphic elements into a design...

SL

  • sleeplessness15n. Lack of sleep; the property of being sleepless; the inability to sleep...

SN

  • snickerdoodle21n. A cookie in which the batter is rolled into a ball and coated with...
  • snowpocalypse25n. An unusually severe blizzard or series of blizzards.

SO

  • socialization24n. The process of learning how to live in a way acceptable to one's own...
  • sociocultural17adj. Of or relating to both society and culture.
  • solderability19n. The quality or degree of being solderable.
  • solemnization24n. The performance of a ceremony (in an appropriate and solemn manner)...
  • somatosensory18adj. Of or pertaining to the perception of sensory stimuli produced by the...
  • somersaulting16n. An instance of performing a somersault.
  • sophisticated21adj. Of a person: having obtained worldly experience, and lacking naiveté...
  • soundproofing20n. Something that prevents sound from traveling through it, such as is put...
  • southeasterly19adj. Situated in, or pointing to, the southeast.
  • southeastward20adj. In or toward the southeast.
  • southwesterly22adj. Situated in, or pointing to, the southwest.
  • southwestward23adj. In or toward the southwest.
  • sovereigntist17n. A supporter of sovereignism (in any sense thereof).

SP

  • spasmodically23adv. In a spasmodic manner; intermittently.
  • specification22n. An explicit set of requirements to be satisfied by a material, product...
  • spectacularly22adv. In a spectacular manner, extraordinarily, amazingly.
  • spectatorship22n. The state or quality of being a spectator.
  • spectrometric21adj. Of or pertaining to spectrometry.
  • spectroscopic23adj. Of or relating to spectroscopy or to a spectroscope.
  • speculatively23adv. In a speculative manner.
  • speechwriting24n. The craft or activity of writing speeches, usually for delivery by...
  • speleological18adj. Pertaining to the exploration of caves; speleology.
  • spermatogenic20adj. Of or relating to spermatogenesis.
  • spermatophore22n. A spermospore.
  • spherocytosis23n. A medical condition in which the red blood cells are globular spheres...
  • sphingomyelin24n. A phospholipid, derived from sphingosine and choline, found in nerve...
  • spinelessness15n. The state or quality of being spineless (not having a spine (literally...
  • spinothalamic22adj. Relating to, or connecting the spinal cord and the thalamus.
  • splendiferous19adj. Beautiful, splendid.
  • spondylolysis22n. A defect or stress fracture of the pars interarticularis of the...
  • spontaneously18adv. In a spontaneous manner; naturally; voluntarily.
  • sportscasting18n. Sports broadcasting, as presented by a sportscaster.
  • sportsmanlike21adj. Demonstrating good sportsmanship, behaving in an honorable and...
  • sportsmanship22n. The good attitude/behaviour displayed by players of a game; fairness...
  • sportswriting19n. Writing about sports.
  • sprightliness19n. The property of being sprightly.

SQ

ST

  • stabilization24n. The process of stabilizing.
  • stalinization22n. The process of stalinizing.
  • statelessness13n. The property of being stateless.
  • statesmanlike19adj. Like a statesman, demonstrating the skills and qualities of a respected...
  • statesmanship20n. The skill of being a good statesman, the ability to perform well in...
  • stationmaster15n. The person in charge of a railroad station, usually an employee of a...
  • statistically18adv. In a statistical way.
  • staurosporine15n. An alkaloid derived from the bacterium Streptomyces staurosporeus that...
  • steadfastness17n. Loyalty in the face of trouble and difficulty.
  • steeplechaser20n. A horse or human athlete who participates in steeplechase racing.
  • steganography23n. The art and science of concealing a secret message, data, or file...
  • stereographic21adj. Of or pertaining to stereography.
  • stereotypical20adj. Pertaining to a stereotype; conventional.
  • sterilization22n. The process of treating something to kill or inactivate microorganisms.
  • steroidogenic17adj. Of or relating to the process of steroidogenesis.
  • stickhandling24n. Skillful manipulation of the puck or ball with a player's stick...
  • stochasticity23n. The quality of lacking any predictable order or plan.
  • stoichiometry23n. The study and calculation of quantitative (measurable) relationships of...
  • stoloniferous16adj. Producing stolons or suckers.
  • stracciatella17n. An Italian soup consisting of a meat broth and small shreds of an...
  • straightening18n. The act of making something straight.
  • strangulation14n. The act of strangling or the state of being strangled.
  • strategically19adv. In a strategic manner.
  • stratigraphic21adj. Of or pertaining to the arrangement of stratigraphy or strata.
  • stratocumulus17n. A principal low-level cloud type, predominantly stratiform, in the form...
  • stratospheric20adj. Of, relating to, or occurring in the stratosphere (“the region of the...
  • stratovolcano18n. A tall conical volcano, composed of layers (or strata) of hardened...
  • strengthening18n. An act or process by which something is strengthened.
  • streptocarpus19n. Any of several plants of the genus Streptocarpus; Cape primroses.
  • streptococcal21adj. Relating to bacteria of the genus Streptococcus.
  • streptococcus21n. A spherical, gram-positive bacterium of the genus Streptococcus....
  • streptokinase19n. An enzyme produced by some streptococci which is involved in breaking...
  • strikebreaker23n. A non-unionized worker hired to replace a striking union worker.
  • strikethrough24n. An horizontal line overlaid on other characters.
  • structuralism17n. A theory of sociology that views elements of society as part of a...
  • structuralist15adj. Of or pertaining to structuralism.
  • structuration15n. A theory proposed by Anthony Giddens in an attempt to reconcile...
  • structureless15adj. Lacking structure.
  • stylistically21adv. In a stylistic manner.

SU

  • subcommission21n. A subdivision of a commission.
  • subcontractor19n. A contractor hired by another contractor (often a general contractor)...
  • subdiscipline20n. A field of study or work that is related to one aspect, but not the...
  • subdivisional19adj. Relating to a subdivision.
  • subepithelial20adj. Of or pertaining to the subepithelium.
  • subexpression24n. An expression that is a part of a larger expression.
  • submandibular20adj. Below the mandible.
  • submillimeter19adj. Less than a millimeter in size.
  • subordination16n. The process of making or classing (something or somebody) as...
  • subpopulation19n. A subdivision of a population.
  • subsalicylate20n. Any metal salicylate in which the metal atom is bonded to both the...
  • subscapularis19n. A certain large, triangular muscle near the shoulder that plays a key...
  • subsidization25n. The act or process of subsidizing.
  • substantially18adv. In a strong or substantial manner; considerably.
  • substantively21adv. In a substantive manner, or to a substantive extent.
  • substitutable17adj. Capable of being used as a substitute; valid as a replacement or...
  • substructural17adj. Of or pertaining to a substructure.
  • subtriangular16adj. Somewhat triangular.
  • subwavelength25adj. Having dimensions less than the wavelength of the light employed.
  • suffocatingly25adv. In a suffocating manner, or to a degree that suffocates.
  • sulfanilamide19n. Any of a class of amino substituted aromatic sulfonamides that are used...
  • sulfasalazine25n. A sulfonamide antibiotic used in the treatment of inflammatory bowel...
  • summarization26n. The act of summarizing.
  • sumptuousness17n. The state or quality of being sumptuous.
  • superabundant18adj. Extremely or exceedingly abundant.
  • superannuated16adj. Obsolete, antiquated.
  • supercollider18n. A high-energy particle accelerator.
  • supercomputer21n. Any computer that has a far greater processing power than others of its...
  • supercritical19adj. Above its critical temperature and critical pressure.
  • superdelegate17n. A member of the Democratic Party who has been selected to attend the...
  • superficially23adv. In a superficial manner; shallowly.
  • superfluidity22n. The frictionless flow that is characteristic of a fluid with zero...
  • superfluously21adv. In a superfluous manner.
  • superfortress18n. A massive and heavily protected fortress.
  • superlatively21adv. In a superlative manner; in the greatest possible way.
  • supermajority27n. A majority of the items being counted that reaches some preset...
  • supermodified22n. A class of racecar used in supermodified racing.
  • supernational15adj. Spanning nations; having large autonomy.
  • supernumerary20n. A person who works in a group, association, or public office without...
  • superordinate16adj. Greater in degree, rank or position.
  • superorganism18n. A social colony of individuals who, through division of labour...
  • superposition17n. The placing of one thing on top of another.
  • supersensible17adj. Beyond the range of what is perceptible by the senses; not belonging to...
  • superspeedway24n. A motor speedway that is at least two miles in length.
  • superstitious15adj. Susceptible to superstitions.
  • superstrength19n. Remarkable strength, above and beyond that of normal human strength.
  • supersymmetry25n. A theory that attempts to unify the fundamental physical forces and...
  • supervenience20n. The state or quality of being supervenient, of being in a dependency...
  • supervisorial18adj. Having supervision, or the leadership or oversight of others, as a...
  • supplementary22adj. Additional; added to supply what is wanted.
  • supracondylar21adj. Above a condyle.
  • supranational15adj. Beyond the borders or scope of any one nation.
  • suprascapular19adj. Situated above, or on the anterior side of, the scapula.
  • supraspinatus17n. A small muscle at the top of the shoulder blade.
  • supratemporal19adj. Above the temporal lobe.
  • surreptitious15adj. Stealthy, furtive, well hidden, covert (especially movements).
  • survivability24n. The condition of being survivable.
  • suspicionless17adj. Without suspicion.
  • suxamethonium27n. Synonym of suxamethonium chloride.

SW

SY

  • symbiogenesis21n. The merging of two separate organisms to form a single new organism.
  • symbiotically25adv. In a symbiotic manner.
  • symbolization29n. The act of symbolizing; the use of symbols to represent things, or the...
  • symmetrically25adv. In a symmetrical manner; so as to show symmetry.
  • sympathectomy30n. The surgical cutting of a nerve in the sympathetic nervous system.
  • symphysiotomy31n. A surgical procedure in which the cartilage of the pubic symphysis is...
  • synaptophysin26n. A human gene that encodes a synaptic vesicle glycoprotein.
  • synchronicity26n. The state of being synchronous or simultaneous.
  • synchronistic23adj. Of or pertaining to synchronism; arranged according to correspondence...
  • synchronously24adv. In a synchronous manner; carried out or occurring with synchrony; in...
  • syntactically23adv. According to the rules of syntax.
  • synthetically24adv. Using synthetic methods.
  • syringomyelia22n. A disorder in which a cyst or cavity forms within the spinal cord...
  • systematizing28n. The process by which something is systematized; a systematization.
  • systemization27n. Systematization.
2,473 rare thirteen-letter words that start with S

The first 300 are shown.

Questions about these words

How many thirteen-letter words that start with S are there?
Word.ws lists 231 thirteen-letter words that start with S, plus 2,473 rare ones.
What are common thirteen-letter words that start with S?
significantly, sophisticated, substantially, strengthening, specification, statistically, schizophrenia and semiconductor.
Which of the thirteen-letter words that start with S has the highest letter score?
schizophrenic scores 34 points with the standard letter tile values.

Related word lists

Source and license

Word lists and meanings adapted from the Wiktionary entry of each word. Text available under the Creative Commons Attribution-ShareAlike 4.0 license. Word.ws left out names, abbreviations, misspellings and offensive words, and ordered the most common words by how often they appear in English (wordfreq). Meanings from Wiktionary; this is not an official Scrabble, Words With Friends or Wordle word list. Wiktionary data of 2026-09-02.

Cite this page: “13-Letter Words Starting with S: 231 Words.” Word.ws, https://word.ws/words/13-letter/starting-with-s. Based on Wiktionary, CC BY-SA 4.0.