Main Entry: in·com·pat·i·ble

Pronunciation: \ˌin-kəm-ˈpa-tə-bəl\

Function: adjective

Etymology: Middle English, from Medieval Latin incompatibilis, from Latin in- + Medieval Latin compatibilis compatible

Date: 15th century

1 : incapable of being held by one person at one time —used of offices that make conflicting demands on the holder
2 : not compatible: as a : incapable of association or harmonious coexistence <incompatible colors> b : unsuitable for use together because of undesirable chemical or physiological effects <incompatible drugs> c : not both true <incompatible propositions> d : incapable of blending into a stable homogeneous mixture

— incompatible noun

— in·com·pat·i·bly \-blē\ adverb