flat-out

flat–out

adj \ˈflat-ˌau̇t\

Definition of FLAT-OUT

1

: being or going at maximum effort or speed

2

: out-and-out, downright <it was a flat–out lie>

First Known Use of FLAT-OUT

1906

Related to FLAT-OUT

Synonyms: 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, flat-out, 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

Related Words: authentic, classic, genuine, real, veritable; constant, endless, eternal, perpetual, undying, unremitting; extreme, unrestricted; confirmed, habitual, hopeless, inveterate; extraordinary, frightful, horrible, huge, main, superlative, supreme, surpassing, terrible, terrific

Near Antonyms: doubtful, dubious, equivocal, qualified, questionable, restricted, uncertain

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