disagree with, be at odds with, differ from, dissent from, be in disagreement with, be opposed to, not see eye to eye with, take issue with
disapprove - reject - oppose - condemn - denounce - disavow - distance oneself from - withhold support for - decline to support - refuse to back
“Not endorse” means to withhold approval, support, or backing for someone or something. It is used when a person, organization, or authority explicitly refuses to give its endorsement, or simply chooses not to take a supportive position. This can apply to products, ideas, political candidates, policies, or actions. To not endorse does not always mean active opposition; it can also mean staying neutral, declining to recommend, or avoiding any formal association. The phrase is common in legal disclaimers, professional statements, reviews, and public communications where one wants to clarify that no official support is being given.