15-Letter Words Starting with T
There are 48 fifteen-letter words that start with T on Word.ws, from tachyarrhythmia to typographically. The most common are transplantation, technologically, troubleshooting, totalitarianism and transcriptional.
Meanings from Wiktionary. Not an official Scrabble, Words With Friends or Wordle word list.
All 48 fifteen-letter words that start with T
TA
- tachyarrhythmia34n. Pathological tachycardia.
TE
- technologically26adv. In a technological manner.
- telekinetically24adv. By means of telekinesis.
- temperamentally24adv. In a temperamental manner.
- temporoparietal21adj. Of or pertaining to the temporal lobe and parietal lobe, or the...
- tetrahydrofuran25n. A heterocyclic ether having a five-membered ring with four carbon atoms...
TH
- thalamocortical24adj. Relating to, or connecting the thalamus and the cerebral cortex.
- thalassotherapy26n. The therapeutic use of seawater.
- therapeutically25adv. In a therapeutic manner.
- thermochemistry30n. The study of the thermodynamics of chemical reactions.
- thermodynamical28adj. Thermodynamic.
- thermoelectrics24n. The study of thermoelectricity.
- thermostability25n. The condition of being thermostable.
- thirtysomething27n. A tricenarian: a person in their thirties, a person aged between 30 and...
- thoughtlessness22n. Disregard for other's feelings.
- thrombocythemia32n. Thrombocytosis.
- thromboembolism28n. An embolism caused by a blood clot carried in the bloodstream from its...
TO
- topographically28adv. In a topographic manner.
- totalitarianism17n. A system of government in which the people have virtually no authority...
TR
- transactivation20n. The activation of something by another entity that has a spatial...
- transcriptional19adj. Of or pertaining to transcription, especially to the transcription of...
- transcriptomics23n. The study of the transcriptome of a species or individual.
- transepithelial20adj. Through or across an epithelium.
- transesophageal21adj. Across the esophagus.
- transferability23n. The ability of something to be transferred.
- transfiguration19n. A major change in appearance or form; a metamorphosis.
- transhistorical20n. Outside the bounds of history; universal; permanent.
- translanguaging18n. The dynamic process whereby multilingual language users mediate complex...
- translationally18adv. By means of, or in terms of, translation (in all senses).
- transliteration15n. The act or product of transliterating, of representing letters or words...
- transnationally18adv. In a transnational manner or context.
- transplantation17n. The medicosurgical specialty (field) concerned with such operations.
- transpositional17adj. Pertaining to, or involving, transposition.
- tranylcypromine27n. An antidepressant drug that is an inhibitor of monoamine oxidase and is...
- triacylglycerol26n. Triglyceride.
- trichloroacetic24adj. Of or pertaining to trichloroacetic acid or its derivatives.
- trichloroethane23n. Either of two isomeric halogenated hydrocarbons, CH₃-CCl₃ or...
- triethanolamine20n. The tertiary amine (HO-CH₂-CH₂)₃N derived from ethanolamine.
- trifluoroacetic22n. The univalent radical derived from acetic by replacing every hydrogen...
- trifluoromethyl26n. The univalent radical CF₃- derived from methyl.
- trigonometrical20adj. Of, pertaining to, or obtained using trigonometry.
- trihexyphenidyl37n. An antimuscarinic drug that has an antispasmodic action on smooth...
- trinitrotoluene15n. A highly explosive yellow crystalline substance, (CH₃C₆H₂(NO₂)₃)...
- troubleshooting21n. The identification and resolution of problems, especially problems of a...
- trustworthiness21n. The state or quality of being trustworthy or reliable.
- trypanosomiasis22n. Any of several diseases or infections caused by a trypanosome.
TW
- twentysomething27n. A person whose age is between twenty and twenty-nine years, inclusive...
TY
- typographically31adv. In a typographical manner.
755 rare fifteen-letter words that start with T
- tablefellowship
- tachometrically
- tachyarrhythmic
- tachykininergic
- tachymetabolism
- tantalizingness
- tapeinocephalic
- tapinocephalian
- tarphyceraconic
- tarsometatarsal
- tarsometatarsus
- tarsophalangeal
- tattooification
- taupathological
- taurochloramine
- tautologousness
- tautomerization
- technicological
- technochemistry
- technocriticism
- technodemocracy
- technodiversity
- technoecosystem
- technofetishism
- technofetishist
- technofeudalism
- technofeudalist
- technographical
- technomarketing
- technopeasantry
- technopessimism
- technopessimist
- technopolitical
- technosexuality
- technosignature
- technoskeptical
- technostrategic
- technostructure
- technotopianism
- tectibranchiate
- tectocerebellar
- tectonoeustatic
- tectonomagmatic
- tectonophysical
- tectonosequence
- teensploitation
- telangiectasial
- telebroadcaster
- telecommunicate
- teleconferencer
- telecryptograph
- teledermatology
- teledermoscopic
- telediagnostics
- teledistributor
- teleexamination
- telegeodynamics
- telegraphically
- telegraphoscope
- teleinformatics
- teleinstruction
- teleiochrysalis
- telelectrograph
- telelectroscope
- telemaintenance
- telemammography
- telemanipulator
- telementational
- telemetrography
- telemicroscopic
- telencephalonic
- teleneurologist
- teleofunctional
- teleologicality
- teleoperational
- telepaediatrics
- teleparallelism
- telepathologist
- telephonometric
- telephonophobia
- telephonophobic
- telephotography
- telepistemology
- telepolariscope
- teleportational
- teleprogramming
- telepsychiatric
- teleradiography
- teleradiologist
- telerobotically
- telesalesperson
- telesomatically
- telestereograph
- telestereoscope
- telestereoscopy
- telesupervision
- teletherapeutic
- telethermograph
- telethermometer
- telethermometry
- telethermoscope
- teletransmitter
- teletransporter
- teletypesetting
- teletypewriting
- teletypewritten
- televangelistic
- teleworkability
- telluronevskite
- telluropyrylium
- telocentromeric
- telocinobufagin
- teloschistacean
- temerariousness
- temnospondylous
- temperatureless
- temperaturewise
- tempestological
- tempestuousness
- temporalization
- temporodorsally
- temporospectral
- temporosphenoid
- temporosuperior
- tenacibaculosis
- tenacissimoside
- tendentiousness
- tenderheartedly
- tendinomuscular
- tendrillessness
- tenementization
- tenosynovectomy
- tensiomyography
- tensionlessness
- tentaculiferous
- tephriphonolite
- teratocarcinoma
- teratogenically
- teratologically
- terebratuliform
- terephthalamide
- terminalization
- terminationless
- terpenophenolic
- terpsichoreanly
- terramechanical
- terraqueousness
- terrestrialness
- terroristically
- terverticillate
- teschemacherite
- testimonializer
- testosteronally
- testosteronemia
- tetartohedrally
- tetraantimonide
- tetrabranchiate
- tetrabrominated
- tetracameralism
- tetracarboxylic
- tetracarpellary
- tetracarpellate
- tetracontadigon
- tetracoordinate
- tetractinomorph
- tetradecacopper
- tetradecahedral
- tetradecahedron
- tetradecapodous
- tetradeuterated
- tetrafunctional
- tetrahexahedral
- tetrahexahedron
- tetrahydrofuryl
- tetrahydropyran
- tetraiodopyrrol
- tetrakaidecagon
- tetralophodonty
- tetramerization
- tetramethylated
- tetramethyllead
- tetramethylurea
- tetranucleating
- tetranucleation
- tetranucleosome
- tetranucleotide
- tetraodontiform
- tetraorganolead
- tetraoxygenated
- tetraparalogous
- tetraparvovirus
- tetraphocomelia
- tetraphosphorus
- tetraphyllidean
- tetrasaccharide
- tetrasialylated
- tetraspasticity
- tetrasporaceous
- tetrasporangium
- tetrasporophyte
- tetrasterigmate
- tetrasulfonated
- tetratennesside
- tetratricontane
- tetrawickmanite
- tetraxenonogold
- tetrazotization
- texturelessness
- thalamostriatal
- thalassiosiroid
- thalassoceratid
- thalassochorous
- thalassodromine
- thalassographer
- thalassographic
- thalassophilous
- thalassophonean
- thalassotherian
- thalattosuchian
- thallotoxicosis
- thanatechnology
- thanatochemical
- thanatocoenosis
- thanatognomonic
- thanatopolitics
- thankworthiness
- thaumarchaeotal
- thaumarchaeotic
- thaumatichthyid
- thaumatological
- thaumaturgistic
- theatrelessness
- thecoperitoneal
- thelephoraceous
- thematicization
- theocentrically
- theocratization
- theolinguistics
- theoparacelsite
- theophilosopher
- theophilosophic
- theorematically
- theoreticalness
- theothanatology
- therapygenetics
- thereafterwards
- therethroughout
- therianthropism
- theridiosomatid
- theriomorphosis
- therizinosaurid
- thermanesthesia
- thermatological
- thermoacoustics
- thermoactivated
- thermoadaptable
- thermoanaerobic
- thermoballistic
- thermobarograph
- thermobarometer
- thermocapillary
- thermocatalytic
- thermocoagulate
- thermocompetent
- thermoconformer
- thermocontainer
- thermodetection
- thermodiffusion
- thermodimorphic
- thermoeconomics
- thermoeconomist
- thermoenergetic
- thermoerosional
- thermogenically
- thermohalocline
- thermohalophile
- thermohardening
- thermohemolysis
- thermohydraulic
- thermoinducible
- thermoinducibly
- thermoinduction
- thermoinitiator
- thermokinematic
- thermomagnetism
- thermomanometer
- thermomechanics
- thermometabolic
- thermometerless
- thermometrician
- thermomolecular
- thermoneutrally
- thermonuclearly
- thermooxidation
- thermooxidative
- thermopathology
- thermoperiodism
- thermophilicity
- thermophosphate
- thermophylactic
The first 300 are shown.
Questions about these words
- How many fifteen-letter words that start with T are there?
- Word.ws lists 48 fifteen-letter words that start with T, plus 755 rare ones.
- What are common fifteen-letter words that start with T?
- transplantation, technologically, troubleshooting, totalitarianism, transcriptional, trustworthiness, transfiguration and transliteration.
- Which of the fifteen-letter words that start with T has the highest letter score?
- trihexyphenidyl scores 37 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: “15-Letter Words Starting with T: 48 Words.” Word.ws, https://word.ws/words/15-letter/starting-with-t. Based on Wiktionary, CC BY-SA 4.0.