01 n. The quality or state of being rational; agreement with reason; possession of reason; due exercise of reason; reasonableness.
pl.
-ties ((-tĭz))
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1.
The quality or state of being rational; agreement with reason; possession of reason; due exercise of reason; reasonableness.“When God has made rationality the common portion of mankind, how came it to be thy inclosure?” — Gov. of Tongue.“Well-directed intentions, whose rationalities will never bear a rigid examination.” — Sir T. Browne.