Flat-out and Plain

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Flat-out adjective - Having no exceptions or restrictions.

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Plain and flat-out are semantically related In some cases you can use "Plain" instead an adjective phrase "Flat-out".

Plain adjective - Free from all additions or embellishment.

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Flat-out and plain are semantically related in big topic. Sometimes you can use "Flat-out" instead an adjective "Plain".

Nearby Words: plainly, plainness, plaint

Both were considered "elite" classes with high requirements for changing to, and both were flat-out superior to plain old fighters.

Source: Everything's Better with Samurai
Sloper's Break the Cutie tirade against Catherine is much more direct and dripping with sarcasm and contempt, telling her flat-out that she is plain, boring, and would only be valued by anyone for her money.

Source: Literature / Washington Square
In a color example, Gary and Nicky usually have plain black hair, but some colorists on the show will occasionally make their hair a brown-highlighted black, or even a flat-out brown (seen in some season 2 episodes).

Source: Western Animation / Superjail!

Cite this Source

Plain and Flat-out. (2016). Retrieved 2026, July 22, from https://thesaurus.plus/related/flat-out/plain

Flat-out & Plain. N.p., 2016. Web. 22 Jul. 2026. <https://thesaurus.plus/related/flat-out/plain>.

Plain or Flat-out. 2016. Accessed July 22, 2026. https://thesaurus.plus/related/flat-out/plain.