Answer: incompatible

AnswerCrossword Clue
incompatibleincapable of association or harmonious coexistence
incompatible(of two things) So opposed in character as to be incapable of existing together
incompatible(of equipment, machinery, computer programs, etc.) Not capable of being used in combination
incompatible(of two people) Unable to live together harmoniously
incompatible(of one thing or person) Not consistent or able to coexist with (another)