Meaning of the word "in one fell swoop" in English

What does "in one fell swoop" mean in English? Explore the meaning, pronunciation, and specific usage of this word with Lingoland.

in one fell swoop

US /ɪn wʌn fɛl swuːp/
UK /ɪn wʌn fɛl swuːp/
"in one fell swoop" picture

Idiom

1.

all at once; in a single action or event

Example:
He lost all his money in one fell swoop.
The new policy addressed several issues in one fell swoop.
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