Synonyms/Hypernyms (Ordered by Estimated Frequency) of verb counteract

4 senses of counteract

Sense 1
antagonize, antagonise, counteract -- (act in opposition to)
       => act, move -- (perform an action, or work out or perform (an action); "think before you act"; "We must move quickly"; "The governor should act on the new energy bill"; "The nanny acted quickly by grabbing the toddler and covering him with a wet towel")

Sense 2
countercheck, counteract -- (oppose or check by a counteraction)
       => control, hold in, hold, contain, check, curb, moderate -- (lessen the intensity of; temper; hold in restraint; hold or keep within limits; "moderate your alcohol intake"; "hold your tongue"; "hold your temper"; "control your anger")

Sense 3
counteract, countervail, neutralize, counterbalance -- (oppose and mitigate the effects of by contrary actions; "This will counteract the foolish actions of my colleagues")
       => cancel, offset, set off -- (make up for; "His skills offset his opponent's superior strength")

Sense 4
sabotage, undermine, countermine, counteract, subvert, weaken -- (destroy property or hinder normal operations; "The Resistance sabotaged railroad operations during the war")
       => disobey -- (refuse to go along with; refuse to follow; be disobedient; "He disobeyed his supervisor and was fired")