Thesaurus
Synonyms & Antonyms of flat-out
(Entry 1 of 2)
having no exceptions or restrictions
- regarded their son-in-law as a flat-out loser and let him know it
Synonyms for flat-out
- absolute,
- all-out,
- arrant,
- blank,
- blooming
- [chiefly British],
- bodacious
- [Southern & Midland],
- categorical
- (also categoric),
- clean,
- complete,
- consummate,
- cotton-picking,
- crashing,
- damn,
- damned,
- dead,
- deadly,
- definite,
- downright,
- dreadful,
- fair,
- flat,
- out-and-out,
- outright,
- perfect,
- plumb,
- profound,
- pure,
- rank,
- regular,
- sheer,
- simple,
- stark,
- stone,
- straight-out,
- thorough,
- thoroughgoing,
- total,
- unadulterated,
- unalloyed,
- unconditional,
- unmitigated,
- unqualified,
- utter,
- very
Words Related to flat-out
Near Antonyms for flat-out
flat-out
adverbSynonyms & Antonyms of flat-out (Entry 2 of 2)
as in completely, absolutely
Synonyms & Near Synonyms for flat-out
- absolutely,
- altogether,
- completely,
- downright,
- entirely,
- fully,
- positively,
- purely,
- radically,
- thoroughly,
- totally,
- utterly,
- wholly
- assuredly,
- certainly,
- indeed,
- indisputably,
- indubitably,
- realistically,
- undoubtedly,
- unquestionably,
- veritably
Antonyms & Near Antonyms for flat-out
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Learn More About flat-out
From the Editors at Merriam-Webster
Words for When You're Not Holding Back
Words for When You're Not Holding Back
Sometimes you have to go all in.
Cite this Entry
“Flat-out.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/flat-out. Accessed 27 Oct. 2021.
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The first known use of flat-out was in 1906
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