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

(of equipments) incapable of being connected or used together within a single system

not suitable to your tastes or needs

of words so related that one contrasts with the other

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

not in keeping with what is correct or proper

not compatible with other facts

facing difficulties in working together or finding mutual happiness due to mismatching qualities, or conflicting needs