n. The quality or state of being irrational; absence of rationality. “Brutish irrationaliity.” South. [ 1913 Webster ]
n.;
When God has made rationality the common portion of mankind, how came it to be thy inclosure? Gov. of Tongue. [ 1913 Webster ]
Well-directed intentions, whose rationalities will never bear a rigid examination. Sir T. Browne. [ 1913 Webster ]