in one fell swoop
US /ɪn wʌn fɛl swuːp/
UK /ɪn wʌn fɛl swuːp/
1.
all at once; in a single action or event
:
•
He lost all his money in one fell swoop.
•
The new policy addressed several issues in one fell swoop.
all at once; in a single action or event