Flat Definition

flăt
flats, flatted, flatter, flattest, flatting, flatter 1
adjective
flatter, flattest, flatter 1
Having a smooth, level surface; having little or no depression or elevation.
Webster's New World
Lying extended at full length.
Webster's New World
Having little depth or thickness; broad, even, and thin.
Webster's New World
Touching at as many points as possible.
With his back flat against the wall.
Webster's New World
Having a flat heel or no heel.
Flat shoes.
Webster's New World
adverb
In a flat manner; flatly (in various senses)
Webster's New World
Level with the ground; horizontally.
American Heritage
On or up against a flat surface; at full length.
American Heritage
In or to a flat condition.
Webster's New World
In a prone or supine position.
Webster's New World
noun
flats
A flat surface or part.
The flat of the hand, of a sword, etc.
Webster's New World
An expanse of level land.
Webster's New World
A low-lying marsh.
Webster's New World
A shallow; shoal.
Webster's New World
A movable section of stage scenery, usually consisting of a wooden frame and a decorated panel of wood or cloth.
American Heritage
verb
flats, flatted, flatting
To make flat; lower a half step.
Webster's New World
To sing or play below the true or proper pitch.
Webster's New World
To lower (a note) a semitone.
American Heritage

(poker slang) To make a flat call; to call without raising.

Wiktionary
(dated) To render dull, insipid, or spiritless; to depress.
Wiktionary
idiom
fall flat
  • to fail in the desired effect; be completely unsuccessful
Webster's New World
flat out
  • at full speed, with maximum effort, etc.
  • clear(ly); definite(ly)
Webster's New World

Other Word Forms of Flat

Noun

Singular:
flat
Plural:
flats

Adjective

Base Form:
flat
Comparative:
flatter 1
Superlative:
flattest

Idioms, Phrasal Verbs Related to Flat

Origin of Flat

  • From 1795, alteration of Scots flet (“inner part of a house”), from Middle English flet (“dwelling”), from Old English flet, flett (“ground floor, dwelling”), from Proto-Germanic *flatją (“floor”), from Proto-Germanic *flataz (“flat”), from Proto-Indo-European *plat- (“flat”). Akin to Old Frisian flet, flette (“dwelling, house”). More at flet, flat1.

    From Wiktionary

  • From Middle English flat, from Old Norse flatr (Norwegian and Swedish flat, Danish flad), from Proto-Germanic *flataz, from Proto-Indo-European *plat- (“flat”); akin to German Flöz (“a geological layer”), Ancient Greek πλατύς (platus), Latvian plats, Sanskrit प्रत्हस् (prathas, “extension”).

    From Wiktionary

  • Alteration of Scots flet inner part of a house from Middle English from Old English floor, dwelling plat- in Indo-European roots

    From American Heritage Dictionary of the English Language, 5th Edition

  • Middle English from Old Norse flatr plat- in Indo-European roots

    From American Heritage Dictionary of the English Language, 5th Edition

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