Word.ws English Dictionary

Synonyms of flat

22 similar words · 8 opposite words

Another word for flat is monotone. Other synonyms of flat are matte, deflated, puncture, still and flabby.

Synonyms and similar words for flat

adjectiveWithout variations in pitch.

adjectiveWithout variation in tone or hue (uniform), and dull (not glossy).

  • matteDull; not reflective of light.

adjectiveDeflated, especially because of a puncture.

adjectiveWith all or most of its carbon dioxide having come out of solution so that the drink no longer...

  • stillNot effervescing; not sparkling.

adjectiveLacking acidity without being sweet.

  • flabbyHaving a slight lack of acidity; having mild sweetness.

adverbCompletely.

adverbDirectly; flatly.

  • bluntlyIn a blunt manner; without delicacy, or the usual forms of civility.
  • curtlyIn a curt manner; tersely, almost rudely.

adverbFlat out (at top speed).

  • topsAt the very most; as a maximum.

nounA complete domicile occupying only part of a building, especially one for rent.

  • apartment USA complete domicile occupying only part of a building, especially one for rent; a flat.

adjectiveHaving no variations in altitude.

adjectiveUninteresting.

adjectiveMore synonyms

  • dullBoring; not exciting or interesting.
  • uninterestingArousing little or no interest; boring or uneventful.
  • unfizzyNot fizzy.

Opposite of flat

adjectiveLacking in depth, substance, or believability; underdeveloped; one-dimensional.

  • roundWell-written and well-characterized; complex and reminiscent of a real person.

adjectiveAntonym(s) of “having no variations in altitude”.

  • bumpy
  • crateredMarked by craters.
  • hillyAbundant in hills; having many hills.
  • rough
  • wrinkledUneven, with many furrows and prominent points, often in reference to the skin or hide of animals.

adjectiveAntonym(s) of.

nounAntonym(s) of “shoes”.

Meaning of flat

  1. adjective Having no variations in height.
  2. adjective In a horizontal line or plane; not sloping.
  3. adjective Smooth; having no protrusions, indentations or other surface irregularities, or relatively so.

Full definition of flat

flat in other languages

Questions about synonyms of flat

What is another word for flat?
Flat has 22 synonyms on Word.ws, such as monotone, matte, deflated, puncture, still, flabby, absolutely and completely.
What is the opposite of flat?
The opposite of flat is round. Other antonyms of flat are bumpy, cratered, hilly, rough and wrinkled.
What does flat mean?
Flat means having no variations in height.

Source and license

Adapted from Wiktionary: flat (page history and authors) and the entries of the words listed. Text available under the Creative Commons Attribution-ShareAlike 4.0 license. Word.ws grouped the synonyms and antonyms by meaning and added links. Wiktionary data of 2026-09-02.

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Cite this page: “Synonyms of flat.” Word.ws, https://word.ws/synonyms/flat. Based on Wiktionary, CC BY-SA 4.0.