1 B2 neutral
To do something that is contrary to a rule, law, or principle.
"The doctor warned that acting against medical advice could be dangerous."
inseparable
act against
B2 neutral inseparable transitive
To take an action that opposes, contradicts, or works contrary to something.
In plain English
To do something that goes against a rule, person, or belief.
What does "act against" mean?
2 meanings, ordered from most common to least. Color-coded by CEFR level.
2 B2 neutral
To take steps to oppose or harm someone's interests.
"The union accused management of acting against the workers' best interests."
inseparable
Usage tip
Common in legal, ethical, and political discourse. Often used with objects like 'law', 'advice', 'principles', 'interests'. More formal than 'go against'.
Words that pair with "act against"
Natural word combinations native speakers use most often.
law principles advice interests wishes regulations
How to conjugate "act against"
The five tense forms you'll use most often.
Base
act against
I/you/we/they
3rd person
acts against
he/she/it
Past simple
acted against
yesterday
Past participle
acted against
have + pp
-ing form
acting against
continuous
Hear "act against" in the wild
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Other ways to say "act against"
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