incompatibility

Estimated CEFR level: C2 — Proficiency

Estimated from word frequency; not an official CEFR classification.

Definition

noun the relation between propositions that cannot both be true at the same time
noun (immunology) the degree to which the body's immune system will try to reject foreign material (as transfused blood or transplanted tissue)
noun the quality of being unable to exist or work in congenial combination

From incompatible + -ity.

Already there was another incompatibility established. — What Will People Say? A Novel, Rupert Hughes
They leave them out of novels--these incompatibilities. — Ann Veronica: A Modern Love Story, H. G. (Herbert George) Wells
The incompatibility of aquacity with the erratic originality of genius. — Ulysses, James Joyce

mutual exclusiveness, inconsistency, repugnance

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