disagree
v.v. to have a different opinion from someone else. You use this when you do not think the same way about a topic.
v. to hold or express a different opinion from another person or group. Often used to describe a lack of consensus or a conflict in viewpoints.
I disagree with your opinion on this movie.
The two scientists disagree about the results of the experiment and plan to run more tests.
While most board members supported the expansion, a vocal minority continued to disagree on the grounds of financial risk.
From Middle English disagre (“to refuse to assent to”), from Anglo-Norman disagreer, disagrer, desagreer (“to refuse assent”), from Old French desagreer, desagrëer (“to be disagreeable; to be unpleasant”) (modern French désagréer (“to displease”)); the English word is analysable as dis- + agree.
The verb is intransitive and typically takes the preposition 'with' for people or 'about'/'on' for topics.
I am disagree with youI disagree with youDisagree is a verb, not an adjective; it does not require the auxiliary verb 'to be' in the simple present tense.