Added 9 October 2026 semiofficial adjective Categories: Describing WordsRare Words adjective ! Definition from WordNet 3.1, Princeton University. More about semiofficial at Wordnik → Where our words come from → Having some official authority or sanction. Related Words: officialsemi-officialunofficialsemi-formalnonofficialofficalspokesmanspokesmenprovisionaryauguralofficialesebureau Back to today's word