dis·a·gree 
(dĭs′ə-grē)
(dĭs′ə-grē)intr.v. dis·a·greed, dis·a·gree·ing, dis·a·grees
1.
a. To have a differing opinion: She disagrees with him on everything. They say it will rain, but I disagree.
b. To dispute or quarrel: When those two disagree, there is a lot of yelling.
2. To fail to correspond: Our figures disagree.
3. To cause adverse effects: Caffeine disagrees with me.
[Middle English disagreen, from Old French desagreer : des-, dis- + agreer, to agree; see AGREE.]