unmirthful
/(ˌ)ʌnˈməːθf(ʊ)l/adjective
Not mirthful; without humour.
Origin
Late 18th century. From un- + mirthful.
- once in a blue moon
- once in a lifetime
- onceness
- once-off
- once-only
- once (or every once) in a while
- once or twice
- once-over
- oncer
- once-through
- once upon a time
- on-chip
- onchocercal
- onchocerciasis
- onchocercosis
- onchocercotic
- onchosphere
- Oncidium
- on cloud nine (or seven)
- onco-
- oncofetal
- oncofoetal
- oncogen
- oncogene
- oncogenesis