IdiomDaily LifeEnglish

one fell swoop

Meaning: One quick, sweeping action.

Example: “She cleared the entire garage in one fell swoop.”

Origin: Coined, or at least first written down, by Shakespeare in Macbeth (1606). Learning that his wife and children have been murdered, Macduff cries out in anguish, comparing the slaughter to a hawk destroying an entire nest at once: "what, all my pretty chickens and their dam / at one fell swoop?" "Fell" here is an old adjective, current since the 1200s and related to "felon," meaning fierce, savage, or deadly — a sense that has otherwise vanished from English outside this one surviving phrase. "Swoop" names the rapid, single diving strike a bird of prey makes on its target. Over the centuries the idiom's original violence has faded almost entirely, leaving behind only its core sense of totality and suddenness — something accomplished all at once, in a single decisive stroke.

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