incongruous

Lacking in harmony; incompatible.

Not in agreement, as with principles; inconsistent.

Not in keeping with what is correct, proper, or logical; inappropriate.

In the theory of numbers, not congruent: thus, 7 and 8 are incongruous to the modulus 3, giving different remainders when divided by the modulus.

Not congruous; incapable of reciprocally fitting and agreeing; unsuited or unsuitable; inharmonious.