n. (also repugnancy)
1. (usu. foll. by to, against) antipathy; aversion.
2 (usu. foll. by of, between, to, with) inconsistency or incompatibility of ideas, statements, etc.
Etymology: ME (in sense 2) f. F r{eacute}pugnance or L repugnantia f. repugnare oppose (as RE-, pugnare fight)