INCOMPATIBLE

adjective Etymology: Middle English, from Medieval Latin incompatibilis, from Latin in- + Medieval Latin compatibilis compatible Date: 15th century incapable of being held by one person at one time, not compatible: as, incapable of association or harmonious coexistence , unsuitable for use together because of undesirable chemical or physiological effects , not both true , incapable of blending into a stable homogeneous mixture, ~ noun incompatibly adverb