round upon (one)

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round upon (one)

To suddenly attack, berate, or show hostility toward one. (A more formal variant of "round on one.") He rounded upon the would-be assailant, knocking him to the ground and bludgeoning him with his cane. The senator rounded upon the reporter after he accused her of accepting bribes.
See also: round, upon
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.
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