flat out

[flat-out] / ˈflætˈaʊt /

ADVERB

at top speed

Synonyms

WEAK

all out at full speed at full throttle bluntly directly full-bore openly peak performance wide open

flat-out

ADVERB

at top speed

Synonyms

WEAK

all the way all-out at a good clip for all one's worth full blast head over heels in full gallop lickety-split the whole nine yards to the max unrestrainedly wide open without reservation

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

Another person with a nut allergy wrote in an online review that they were "flat out refused service" despite accepting the risk and that the restaurants rule on allergies is "not an acceptable one".

From BBC • Apr. 15, 2026

Jacobson says they have computers now working flat out generating brackets for this year’s competition.

From MarketWatch • Mar. 18, 2026

There is a greater risk of collision if one car goes into energy recovery mode while another is still going flat out on full power behind.

From BBC • Mar. 3, 2026

One academic asked me flat out, if I loved Iran so much, why was I badmouthing it?

From The Wall Street Journal • Feb. 27, 2026

We flat out refused, but Mom went up in front of the mourners, genuflected with a grand sweep, and then kissed Erma’s cheek so vigorously that you could hear the puckering sound throughout the chapel.

From "The Glass Castle" by Jeannette Walls

flat out

Example Sentences

Related Words