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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.
One that is incompatible.

in′com·pat′i·ble·ness n.
in′com·pat′i·bly adv.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
References in periodicals archive ?
against Cuba also show the weaknesses and incompatibleness of the only superpower in the changing world" (Chen, 1996).
Priya and Katie also started to feel their incompatibleness. Katie told BB and the others who would listen that Priya had been selfishly hanging onto her money.