First Known Use of flat-out
Synonymsall-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 Wordsauthentic, 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 Antonymsdoubtful, dubious, equivocal, qualified, questionable, restricted, uncertain
Definition of flat out
Examples of flat out in a Sentence
I told him flat out that I have no intention of marrying him.
We asked for more time but they refused us flat out.
The car does 180 mph flat out.
Recent Examples of flat out from the Web
This division will forever be the favorite, as NBC has flat out admitted the obvious that the Cowboys mean ratings gold.
Nothing in the room but a glass night lamp on a table and, set flat out under the windows like a cheap placemat, the bed.
Operating profit is growing, the company has added eight new looms, and staff are working flat out to meet orders.
Staff are working flat out in the hope that a hiatus for the venerable telescope doesn’t become permanent.
That’s a difference that has been far too often misunderstood, or just flat out ignored.
These example sentences are selected automatically from various online news sources to reflect current usage of the word 'flat out.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.
First Known Use of flat out
FLAT-OUT Defined for English Language Learners
Definition of flat out for English Language Learners
: in a very clear and direct way
: at the fastest possible speed
—used to make a statement more forceful
FLAT-OUT Defined for Kids
Definition of flat out for Students
- I told him flat out to leave.
- We worked flat out to finish.
Seen and Heard
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