- at one fell swoop
- at one fell swoop & in one fell swoopFig. in a single incident; as a single event. (This phrase preserves the old word
fell,meaning “terrible” or “deadly.”) •
The party guests ate up all the snacks at one fell swoop.•
When the stock market crashed, many large fortunes were wiped out in one fell swoop.* * *See: IN ONE FELL SWOOP.
Dictionary of American idioms. 2013.