Added 9 October 2026 irreducible /ˌɪɹɪˈdjuːsɪbəl/ adjective Categories: Describing WordsRare Words adjective ! Definition from WordNet 3.1, Princeton University. Pronunciation from Wiktionary, via Kaikki.org. More about irreducible at Wordnik → Where our words come from → Incapable of being made smaller or simpler. an irreducible minimum Related Words: inescapableintractablemust-seeunavoidablebasichardlineelementaryelementalindivisibleminimalfundamentalbasal Back to today's word