Quantcast
Merriam-Webster Logo
  • Dictionary
  • Thesaurus
  • Scrabble
  • Spanish Central
  • Learner's Dictionary

flat–out

play
adjective \ˈflat-ˌau̇t\

Simple Definition of flat–out

  • : absolute and complete

  • : greatest possible

Source: Merriam-Webster's Learner's Dictionary

Full Definition of flat–out

  1. 1 :  being or going at maximum effort or speed

  2. 2 :  out-and-out, downright <it was a flat–out lie>

1906

First Known Use of flat–out

1906


FLAT–OUT Defined for Kids

flat–out

play
adjective \ˈflat-ˌau̇t\

Definition of flat–out for Students

  1. 1 :  2out-right 1 <That's a flat-out lie. — Phyllis Reynolds Naylor, Shiloh>

  2. 2 :  greatest possible <a flat-out effort>




Learn More about flat–out

  1. Spanish Central: Translation of flat–out


Seen and Heard

What made you want to look up flat–out? Please tell us where you read or heard it (including the quote, if possible).

WORD OF THE DAY

to depart quickly

Get Word of the Day daily email!

WORD GAMES

Take a 3-minute break and test your skills!

alphabet-pasta-spelling-help

Which is the correct spelling?

acommodate accommodate acommadate accomodate
Name That Thing

Test your visual vocabulary with our 10-question challenge!

TAKE THE QUIZ
SCRABBLE® Sprint

Test Your Knowledge - and learn some interesting things along the way.

TAKE THE QUIZ