Added 9 October 2026 rationally adverb Categories: Describing WordsUncommon Words adverb ! Definition from WordNet 3.1, Princeton University. More about rationally at Wordnik → Where our words come from → In a rational manner. we must act rationally Related Words: sensiblywiselycoherentlyjudiciouslylogicallyprudentlylegitimatelyefficientlyeffectivelyintelligentlyreasonablysoundly Back to today's word