Simple past tense and past participle of unlearn.(verb)
Innate, inherent or inborn.(adjective)
Not educated(adjective)
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Use "unlearnt" in a sentence
"Many North Koreans seem to have "unlearnt" basic instincts, such as curiosity."
"Indeed, it's great as a training tool for potential future engineers, although a lot will have to be unlearnt in order to move from Lego to poured-concrete construction."
"You'd have thought that Labour would have learnt from Crewe & Nantwich that nepotism is unappealing - but then again there are many unlearnt lessons from that campaign."