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2. flat-out
1. plain, open and direct

2. at full speed

3. total, complete
He just farted in my face, flat-out.
1. flat-out
flat-out: an adverb that means: at full capacity, at maximum speed, totally, thoroughgoing
Ben, pumps working flat-out. A foot of water in the bilge.

a flat-out promotional campaign
a flat-out deception.
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