someone’s real character or intentions
人の本当の性格や意図 (hito no hontou no seikaku ya ito)
"He showed his true colors when he lied to me."
"彼は私に嘘をついたときに本性を現した。" (kare wa watashi ni uso o tsuita toki ni honsho o arawashita)
to gradually stop using or providing something
to develop romantic feelings for someone
in very good health
to attack someone's most vulnerable point
intelligence or brainpower
to understand or solve the real cause of something