Disappointed; experiencing disillusionment; having lost one's illusions.(adjective)
Simple past tense and past participle of disillusion.(verb)
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Use "disillusioned" in a sentence
"Mary was what you call a disillusioned and disaffected Democrat."
"He was particularly interested in disillusioned outsiders in conflict with society and the law (albeit motivated more by emotion than logic), and their ensuing violence and pain, both of which were conveyed in a deeply sensuous way through the powerful performances Penn consistently drew from his actors."
"When I’ve spoken to dozens of audiences during the two months since the Democratic National Convention, where I was an elected Obama delegate, there’s been an overwhelmingly positive response when I make a simple statement about Obama and the prospects of an Obama presidency: the best way to avoid becoming disillusioned is to not have illusions in the first place."