dis·a·gree / ˌdisəˈgrē/ • v. (-a·grees, -a·greed, -a·gree·ing) [intr.] 1. have or express a different opinion: no one was willing to disagree with him historians often disagree. ∎ (disagree with) disapprove of: she disagreed with the system of apartheid.2. (of statements or accounts) be inconsistent or fail to correspond: results that disagree with the findings reported so far. ∎ (disagree with) (of food, climate, or an experience) have an adverse effect on (someone): the North Sea crossing seemed to have disagreed with her.