incompatible

incompatible - adjective

not compatible
used especially of drugs or muscles that counteract or neutralize each other's effect
not suitable to your tastes or needs
incapable of being used with or connected to other devices or components without modification
of words so related that one contrasts with the other
not easy to combine harmoniously
not compatible with other facts
not in keeping with what is correct or proper
used especially of solids or solutions; incapable of blending into a stable homogeneous mixture

incompatible - thesaurus