Meaning of “disagree” - Learner’s Dictionary

disagree

verb [ I ] us uk /ˌdɪsəˈɡriː/ present participle disagreeing, past tense and past participle disagreed

B1 to have a different opinion from someone else about something:

I disagree with most of what he said.
Experts disagree about/on the causes of the disease.

More examples

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