Added 9 October 2026 unmistakable adjective Categories: Describing WordsUncommon Words adjective ! Definition from Wiktionary (CC BY-SA). More about unmistakable at Wordnik → Where our words come from → Unique, such that it cannot be mistaken for something else. Origin From un- + mistake + -able. From Wiktionary, via Kaikki.org (CC BY-SA) Related Words: clearunmistakeableundisputableunarguableunchallengeableundeniableirrefutableundisputedinescapableincontrovertibleunquestionableincontestable Back to today's word