Added 10 October 2026 mirthfully adverb Categories: Describing WordsObscure Words adverb ! Definition from Wiktionary (CC BY-SA). More about mirthfully at Wordnik → Where our words come from → In a mirthful manner; happily Related Words: merrilygaylyhappilyjubilantlyblithelyjoyfullyjoyouslycheerfullylaughinglyunmirthfullygladfully Back to today's word