flat out

adv. Informal

1. In a direct manner; bluntly: told me the truth flat out.

2. At top speed: running flat out.

American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

ThesaurusAntonymsRelated WordsSynonymsLegend:

Adv.	1.	flat out - in a blunt direct manner; "he spoke bluntly"; "he stated his opinion flat-out"; "he was criticized roundly" bluffly, bluntly, brusquely, roundly
	2.	flat out - at top speed; "he ran flat out to catch the bus"; "he was off down the road like blue murder" like blue murder

flat out

adverb

1. Informal. In a direct, positive manner:

emphatically, flat, flatly, positively.

2. Informal. In a rapid way:

apace, fast, posthaste, quick, quickly.

Informal: hell-for-leather, lickety-split, pronto.

Idioms: full tilt, in a flash, in nothing flat, like a bat out of hell, like a blue streak, like a flash, like a house on fire, like a shot, like a streak, like greased lightning, like the wind, like wildfire.

adjectiveflat-out

Informal. Completely such, without qualification or exception:

absolute, all-out, arrant, complete, consummate, crashing, damned, dead, downright, flat, out-and-out, outright, perfect, plain, pure, sheer, thorough, thoroughgoing, total, unbounded, unequivocal, unlimited, unmitigated, unqualified, unrelieved, unreserved, utter.

Informal: positive.

Chiefly British: blooming.

Translations

بِسُرْعَةٍ وَنَشاط

na plné obrátkynejvyšší rychlostí

for fulde omdrejninger

à toute allure

mindent beleadva

af fullum krafti

al verde esattamente

for fullt full fart

bütün hızıyla

倾全力全速地

flat

(flӕt) adjective

1. level; without rise or fall. a flat surface.

2. dull; without interest. She spent a very flat weekend.

3. (of something said, decided etc) definite; emphatic. a flat denial.

4. (of a tyre) not inflated, having lost most of its air. His car had a flat tyre.

5. (of drinks) no longer fizzy. flat lemonade; (also adverb) My beer has gone flat.

6. slightly lower than a musical note should be. That last note was flat; (also adverb) The choir went very flat.

adverb

stretched out. She was lying flat on her back.

noun

1. (American aˈpartment) a set of rooms on one floor, with kitchen and bathroom, in a larger building or block. Do you live in a house or a flat?

2. (in musical notation) a sign (♭) which makes a note a semitone lower.

3. a level, even part. the flat of her hand.

4. (usually in plural) an area of flat land, especially beside the sea, a river etc. mud flats.

ˈflatly adverb

definitely; emphatically. She flatly denied it.

ˈflatten verb

(often with out) to make or become flat. The countryside flattened out as they came near the sea.

flat rate

a fixed amount, especially one that is the same in all cases. He charged a flat rate for the work.

flat out

as fast, energetically etc as possible. She worked flat out.