noun
propensity to steal; thieving heart
Refers to a person's inner inclination or character trait of stealing; often used in moral or psychological contexts.
彼は盗心があるから気をつけたほうがいい。
He has a propensity to steal, so you'd better be careful.
盗心を抑えるには強い意志が必要だ。
It takes strong will to suppress the urge to steal.