Definition of Flat Out
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(adverb) at top speed; "he ran flat out to catch the bus"; "he was off down the road like blue murder"
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(adverb) in a blunt direct manner; "he spoke bluntly"; "he stated his opinion flat-out"; "he was criticized roundly"
Antonyms of Flat Out
No Antonyms Found.
Homophones of Flat Out
No Homophones Found.