Meaning of “antidote” - Learner’s Dictionary

antidote

noun [ C ] uk us /ˈæntidəʊt/
antidote to sth

an activity that stops something bad from harming you:

Exercise is the best antidote to stress.

a substance that stops another substance from damaging your body:

a deadly poison with no antidote

(Definition of “antidote” from the Cambridge Learner’s Dictionary © Cambridge University Press)