adj. 25B6; adjective
she and McBride are totally incompatible : UNSUITED, mismatched, ill-matched, poles apart, worlds apart, like day and night; Brit. like chalk and cheese.
incompatible economic objectives : IRRECONCILABLE, conflicting, opposed, opposite, contradictory, antagonistic, antipathetic; clashing, inharmonious, discordant; mutually exclusive.
a theory incompatible with that of his predecessor : INCONSISTENT WITH, at odds with, out of keeping with, at variance with, inconsonant with, different to, divergent from, contrary to, in conflict with, in opposition to, (diametrically) opposed to, counter to, irreconcilable with.
well matched, harmonious, consistent.