Flat and Hilly

Opposite meaning words

Flat adjective - Being neither more nor less than a certain amount, number, or extent.

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Hilly is an antonym for flat in even topic.

Nearby Words: flatter, flatly, flatness, flatlet, flatting

Hilly adjective - Having hills and crags.

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Flat is an antonym for hilly in bumpy topic.

Nearby Words: hill, hilled, hilling

Pittsburgh lies within the Appalachian Mountains and is notorious for its hilly terrain, but the show was filmed in the rather flat Toronto.

Source: Series / Queer as Folk
The world is "mostly flat with some hilly and mountainous areas" but the cities themselves feature solid houses and walls that are climbable and the dungeons just revel in the fact that you can cross over your own path on three or four different levels.

Source: Video Game / The Elder Scrolls II: Daggerfall
Anything north and west of Munich (which mostly is flat planes) is filled wit with working-class apartment blocks, main roads and industrial parks, while the south and east (much more hilly and extending to the alps) feature all the more affluent suburbs, hamlets and commercial settlements.

Source: Urban Segregation

Cite this Source

Hilly and Flat. (2016). Retrieved 2026, August 15, from https://thesaurus.plus/related/flat/hilly

Flat & Hilly. N.p., 2016. Web. 15 Aug. 2026. <https://thesaurus.plus/related/flat/hilly>.

Hilly or Flat. 2016. Accessed August 15, 2026. https://thesaurus.plus/related/flat/hilly.

Google Ngram Viewer shows how "flat" and "hilly" have occurred on timeline