The Collaborative International Dictionary
Peril \Per"il\, n. [F. p['e]ril, fr. L. periculum, periclum, akin to peritus experienced, skilled, and E. fare. See Fare, and cf. Experience.] Danger; risk; hazard; jeopardy; exposure of person or property to injury, loss, or destruction.
In perils of waters, in perils of robbers.
--2 Cor. xi.
26.
Adventure hard
With peril great achieved.
--Milton.
At one's peril, or On one's peril, with risk or danger to
one; at the hazard of. ``On thy soul's peril.''
--Shak.
Syn: Hazard; risk; jeopardy. See Danger.
Usage examples of "at one's peril".
It was a known fact of the Shadow Game that one executed a sorcerer at one's peril.
The experience warned him yet again how dangerous Straub could be and how one ignored him at one's peril.