Synonyms of act on/upon in English:

act on/upon


See definition of act

phrase

1‘the drug acted directly on the blood vessels’

SYNONYMS
affect, have an effect on, influence, exert influence on, work on, have an impact on, impact on, alter, change, modify, transform, condition, control
ANTONYMS

have no effect on

2‘he was merely acting on the orders of the party leader’

SYNONYMS
comply with, act in accordance with, follow, go along with
obey, take heed of, heed, conform to, abide by, adhere to, stick to, stand by, uphold, fulfil, meet, discharge
ANTONYMS

flout