Added 9 October 2026 disillusionment /ˌdɪsɪˈluːʒənmənt/ noun Categories: Mind & IdeasRare Words noun ! Definition from WordNet 3.1, Princeton University. Pronunciation from Wiktionary, via Kaikki.org. More about disillusionment at Wordnik → Where our words come from → Freeing from false belief or illusions. Origin From dis- + illusion + -ment. From Wiktionary, via Kaikki.org (CC BY-SA) Related Words: disenchantmentdisappointmentdespairdismayregretdisaffectionfrustrationalienationdelusiondeceptiondissatisfactionletdown Back to today's word