Added 9 October 2026 bimestrial adjective Categories: Describing WordsObscure Words adjective ! Definition from Wiktionary (CC BY-SA). More about bimestrial at Wordnik → Where our words come from → Occurring once every two months Since the dinner was bimestrial, the next one was due soon. Related Words: bimonthlylongbimensualsemimonthlybimensalbiyearlysemiannualbiannualbiweeklytwice-yearlybi-annualsemi-weekly Back to today's word