To fail to accord; not to agree; to lack harmony; to differ; to be unlike; to be at variance.

To differ in opinion; to hold discordant views; to be at controversy; to quarrel.

be of different opinions; "I beg to differ!"; "She disagrees with her husband on many questions"

To be unsuited; to have unfitness; as, medicine sometimes disagrees with the patient; food often disagrees with the stomach or the taste.