Definition of unmirthfully in English:

unmirthfully

adverb

  • Mirthlessly; without humour.

Origin

Late 19th century; earliest use found in Allen's Indian Mail. From un- + mirthfully.

Pronunciation

unmirthfully

/(ˌ)ʌnˈməːθfʊli//(ˌ)ʌnˈməːθf(ə)li/