act on/upon
act on/upon
act on/upon [ phrasal verb ]
act on/upon (something) : to use (something, such as a feeling or suggestion) as a reason or basis for doing something
They never acted on the information they had.
We were too late to act upon his suggestion.
It's okay to feel angry or jealous, but you mustn't act on those feelings.
— see also act 6 (above), 2
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Main Entry: act
