Definition of "Incompatible" :

adjective: not compatible

"Incompatible personalities."

adjective: incapable of being used with or connected to other devices or components without modification

adjective: used especially of solids or solutions; incapable of blending into a stable homogeneous mixture

adjective: not suitable to your tastes or needs

adjective: not in keeping with what is correct or proper

adjective: not compatible with other facts

adjective: used especially of drugs or muscles that counteract or neutralize each other's effect

adjective: not easy to combine harmoniously

adjective: of words so related that one contrasts with the other