(1):

(v. i.) To have a difference, cause of variance, or quarrel; to dispute; to contend.

(2):

(v. i.) To be or stand apart; to disagree; to be unlike; to be distinguished; - with from.

(3):

(v. i.) To be of unlike or opposite opinion; to disagree in sentiment; - often with from or with.

(4):

(v. t.) To cause to be different or unlike; to set at variance.