Similar word to unlike:

apples and oranges, clashing, conflicting, contradictory, contrary, contrasted, discordant, disharmonious, disparate, dissimilar, dissonant, distant, distinct, divergent, diverse, far cry from, heterogeneous, hostile, incompatible, incongruous, inconsistent, mismatched, not alike, offbeat, opposed, opposite, poles apart, separate, unalike, unequal, unrelated, variant, various, weird