Added 9 October 2026 uncharacteristic adjective Categories: Describing WordsRare Words adjective ! Definition from Wiktionary (CC BY-SA). More about uncharacteristic at Wordnik → Where our words come from → Not characteristic. Out of character; behavior that is unusual for a given person or thing. Related Words: atypicaluncommonunusualpeculiarextraordinarynoncharacteristicuncharacterizednontypicalununusualuntypicalunhabitual Back to today's word