One cannot change one's nature, no matter how much time passes.

(dated) Synonym of by the skin of one's teeth

Alternative form of tilak (“Hindu caste mark on forehead”)

(idiomatic) Alternative form of bare one's teeth

To accuse someone of something, or reproach them for it. / To fling some remark at someone, such as a taunt or a challenge.

plural of scissor tooth

in someone's face; in defiance of opposition from someone

Synonym of cast something in someone's teeth

Of no consequence to one.

(Britain, idiomatic) Extremely annoyed about, fed up, tired of.