Meaning of “be set against sth/doing sth” - Learner’s Dictionary

be set against sth/doing sth

phrasal verb with set us uk /set/ verb present participle setting, past tense and past participle set

to not want to do or have something:

He is dead set against the move.

(Definition of “be set against sth/doing sth” from the Cambridge Learner’s Dictionary © Cambridge University Press)