Synonyms & Antonyms of flat

(Entry 1 of 3)

1 being neither more nor less than a certain amount, number, or extent
  • industrial growth has been a flat two percent for each of the last four quarters

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2 causing weariness, restlessness, or lack of interest
  • a flat portrayal of Benjamin Franklin in the new TV series

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Antonyms for flat

3 having a surface without bends, breaks, or irregularities
  • preferred riding her bike on a flat road

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8 lacking in taste or flavor
  • this pasta dish tastes a little flat

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Antonyms for flat



Synonyms & Antonyms of flat (Entry 2 of 3)


chiefly British

Synonyms of flat (Entry 3 of 3)

a room or set of rooms in a private house or a block used as a separate dwelling place
  • had to take on a third roommate in order to afford the bigger flat

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Frequently Asked Questions About flat

How does the adjective flat contrast with its synonyms?

Some common synonyms of flat are even, level, plane, and smooth. While all these words mean "having a surface without bends, curves, or irregularities," flat applies to a surface devoid of noticeable curvatures, prominences, or depressions.

the work surface must be flat

When would even be a good substitute for flat?

In some situations, the words even and flat are roughly equivalent. However, even applies to a surface that is noticeably flat or level or to a line that is observably straight.

trim the hedge so it is even

When is it sensible to use level instead of flat?

The words level and flat can be used in similar contexts, but level applies to a horizontal surface that lies on a line parallel with the horizon.

the vast prairies are nearly level

Where would plane be a reasonable alternative to flat?

While in some cases nearly identical to flat, plane applies to any real or imaginary flat surface in which a straight line between any two points on it lies wholly within that surface.

the plane sides of a crystal

When is smooth a more appropriate choice than flat?

The words smooth and flat are synonyms, but do differ in nuance. Specifically, smooth applies especially to a polished surface free of irregularities.

a smooth skating rink

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Time Traveler for flat

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The first known use of flat was in the 14th century

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Cite this Entry

“Flat.” Thesaurus, Merriam-Webster, Accessed 25 Oct. 2021.

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More from Merriam-Webster on flat

Nglish: Translation of flat for Spanish Speakers

Britannica English: Translation of flat for Arabic Speakers Encyclopedia article about flat


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