Added 9 October 2026 infrequent adjective Categories: Describing WordsUncommon Words adjective ! Definition from WordNet 3.1, Princeton University. More about infrequent at Wordnik → Where our words come from → Not frequent; not occurring regularly or at short intervals. infrequent outbursts of temper Related Words: occasionalrarerarelyfrequentcasualuncommonepisodicunusualprevalentscarcescantsparse Back to today's word