/ ˌkleptəˈmeɪniə; NAmE / noun
[ U ] a mental illness in which sb has a strong desire, which they cannot control, to steal things
► klep·to·maniac / ˌkleptəˈmeɪniæk; NAmE / noun :
She's a kleptomaniac.
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WORD ORIGIN
mid 19th cent.: from Greek kleptēs thief + -mania .