Simple past tense and past participle of unhinge.(verb)
(of a stamp) not having ever been mounted using a stamp hinge.(adjective)
Mentally ill.(adjective)
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Use "unhinged" in a sentence
"No Way Out actress Sean Young is still considered a Hollywood outcast after a string of incidents that earned her the label "unhinged," such as being sued for harassment by her then-boyfriend, actor James Woods, over two decades ago."
"The name unhinged Truvy and she could no longer hold back what had been bottled inside since she’d walked into the parlor."
"Callers who are too polished (boring callers, in the vernacular) sometimes have a harder time getting through, though Danheiser admits that the line between interesting and unhinged is a fine one."