Entire
Entire adverb - To a full extent or degree.
Usage example: a shocking revelation that would destroy entire the false little world that she had carefully constructed for herself
Flat and entire are semantically related. In some cases you can use "Flat" instead the word "Entire" as an adjective or an adverb.
Mutual synonyms
Both words in one sentence
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In fact, the entire series (particularly from Book 3 onwards) can be read as a subversion of the idea that a hero can snap his fingers and ally the entire world on his side in five seconds flat.
Source: The Alliance -
Downer Ending: The entire series ends on one, wherein time reverses for the entire world and the bad guys flat-out win.
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When he later gave a similar speech to the Kages in an attempt to make the final steps of his plan go smoother, they rejected him flat-out; and Naruto called him on bullshitting the entire thing.
Source: New Era Speech
Cite this Source
Flat and Entire. (2016). Retrieved 2026, August 15, from https://thesaurus.plus/related/entire/flat
Entire & Flat. N.p., 2016. Web. 15 Aug. 2026. <https://thesaurus.plus/related/entire/flat>.
Flat or Entire. 2016. Accessed August 15, 2026. https://thesaurus.plus/related/entire/flat.
Google Ngram Viewer shows how "entire" and "flat" have occurred on timeline