Incompatible1. (a.) Not compatible; incapable of associating or mixing; as, incompatible colors, desires, ambitions.
2. (a.) Incapable of being together without mutual reaction or decomposition, as certain medicines.
3. (n.) An incompatible substance; esp., in pl., things which can not be placed or used together because of a change of chemical composition or of opposing medicinal qualities; as, the incompatibles of iron.
Thesaurus Entries
abnormal, absurd, anomalous, antagonistic, antipathetic, antithetic, assorted, at cross-purposes, at loggerheads, at odds, at variance, at war, autistic, bashful, chill, chilly, clashing, close, cold, conflicting, contradictory, contrary, contrasted, contrasting, cool, cranky, cross, departing, deviating, deviative, different, differentiated, differing, disaccordant, disagreeable, disagreeing, disconsonant, discordant, discrepant, discrete, discriminated, disharmonious, disjoined, disparate, disproportionate, dissident, dissimilar, dissociable, dissonant, distinct, distinguished, divergent, diverging, divers, diverse, diversified, frosty, grating, heterogeneous, hostile, icy, immiscible, in disagreement, inaccordant, incoherent, incommensurable, incommensurate, incongruous, inconsequent, inconsistent, inconsonant, inharmonious, inhospitable, inimical, insociable, irreconcilable, jangling, jarring, many, mismatched, mopey, mopish, morose, motley, multifarious, negative, nongregarious, opposed, opposite, out of accord, out of proportion, out of whack, oxymoronic, paradoxical, poles apart, poles asunder, repugnant, self-contained, self-contradictory, self-sufficient, separate, separated, several, snug, socially incompatible, strained, sullen, tense, unamiable, unamicable, unclubbable, uncommunicative, uncompanionable, unconformable, uncongenial, uncordial, unequal, unfriendly, ungenial, unharmonious, unlike, unsociable, unsocial, unsuited, variant, varied, variegated, various, varying, widely apart, worlds apart