Meaning of “cancel sth out” - Learner’s Dictionary

cancel sth out

phrasal verb with cancel us uk /ˈkænsəl/ verb [ T ] present participle mainly UK cancelling, past tense and past participle cancelled, present participle US canceling, past tense and past participle canceled

If something cancels out another thing, it stops it from having any effect.

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