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At one fell swoop Meaning in English

expression

ˈæt/ /ˈwən/ /ˈfɛɫ/ /ˈswup
AT WUHN FEL SWOOP
ˈæt/ /wˈɒn/ /fˈɛl/ /swˈuːp
AT WON FEL SWOOP

Definition

If something happens 'at one fell swoop', it happens all at the same time, suddenly and often unexpectedly.

Usage & Nuances

This is a somewhat formal, literary expression, often used to emphasize how much or how quickly something changes. Use in writing or serious speech, rarely in casual conversation. Synonyms: 'all at once', 'in one blow', 'in one go'.

Example Sentences

The company fired ten workers at one fell swoop.

basic

She finished all her exams at one fell swoop.

basic

Our problems disappeared at one fell swoop.

basic

All of my savings were gone at one fell swoop after the accident.

natural

You can’t change old habits at one fell swoop; it takes time.

natural

The city demolished the old buildings at one fell swoop to make room for a new park.

natural