"repugnance" in the noun sense
1. repugnance, repulsion, revulsion, horror
2. incompatibility, mutual exclusiveness, inconsistency, repugnance
the relation between propositions that cannot both be true at the same time
Source: WordNet® (An amazing lexical database of English)
Princeton University "About WordNet®."
WordNet®. Princeton University. 2010.
View WordNet® License