Dictionary
2 ENTRIES FOUND:

flat–out

adjective \ˈflat-ˌat\

: absolute and complete

: greatest possible

Full 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

Browse

Next Word in the Dictionary: flat outPrevious Word in the Dictionary: flatmateAll Words Near: flat-out
March 29, 2015
discomfit Hear it
To thwart or disconcert
Take a 3-minute break and test your skills!
How to use a word that (literally) drives some people nuts.
Test your vocab with our fun, fast game
Ailurophobia, and 9 other unusual fears