Not capable of existing in agreement or harmony with something else.adjective
Not capable of living or working together happily or harmoniously; antagonistic.adjective
Impossible to be held simultaneously by one person.adjective
That cannot be simultaneously true; mutually exclusive.adjective
Producing an undesirable effect when used in combination with a particular substance.adjective
Not immunologically compatible.noun
One that is incompatible.
Not compatible; incapable of harmonizing or agreeing; mutually repelling; incongruous.