In one blow
see: at one stroke
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- In one ear and out the other
Quickly forgotten, as in Their advice to her just went in one ear and out the other. This expression, a proverb in John Heywood’s 1546 collection, conjures up a graphic image of sound traveling through one’s head. [ Late 1300s ]
- In one breath
see: in the same breath
- In one piece
adverb phrase Intact; unharmed: She came out of it in one piece Related Terms all in one piece see: all in one piece
- In one stroke
see: at one stroke
- In on the ground floor
adverb phrase Engaged early and profitably in a project, investment, etc: You better act now if you want to be in on the ground floor (1872+)