Beyond one's knowledge or understanding.

(idiomatic) The means of one's own punishment or downfall.

Alternative form of rod for one's back

Voluntarily, under one's own power, without being commanded or controlled.

(idiomatic) To remain silent, especially in order to keep a secret or to avoid saying something inappropriate.

(idiomatic, euphemistic) To engage (as the more active or dominant partner) in sexual intercourse with, especially without the consent of one's partner; rape

(idiomatic) To forcibly prevent oneself from speaking, especially in order to avoid saying something inappropriate or likely to cause a dispute.

(euphemistic, biblical) To lower one’s garment, especially to urinate or defecate.

(idiomatic) Alternative form of pull punches

(idiomatic) Alternative form of knit one's brows.