in·com·pat·i·ble 
(ĭn′kəm-pătə-bəl)
(ĭn′kəm-pătə-bəl)adj.
1.
a. Not capable of existing in agreement or harmony with something else: incompatible views on religion.
b. Not capable of living or working together happily or harmoniously; antagonistic: incompatible roommates.
2. Impossible to be held simultaneously by one person: the incompatible offices of prosecutor and judge.
3. Logic That cannot be simultaneously true; mutually exclusive.
4. Medicine
a. Producing an undesirable effect when used in combination with a particular substance: a medication that is incompatible with alcohol.
b. Not immunologically compatible: incompatible blood types.
n.
One that is incompatible.
in′com·pati·ble·ness n.
in′com·pati·bly adv.