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flatout Definition
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flatout
adjective(flat-out)being or going at maximum effort or speed
flatout
adjective(flat-out)out-and-out, downright
flatout
adjective(flat-out)absolute and complete
flatout
adverb(flat-out)in a blunt and direct manner : openly
flatout
adverb(flat-out)at top speed or peak performance
flatout
adverb(flat-out)absolutely, downright —usually used as an intensive