peril (n.) Look up peril at Dictionary.com
c.1200, from Old French peril "danger, risk" (10c.), from Latin periculum "an attempt, trial, experiment; risk, danger," with instrumentive suffix -culum and first element from PIE *peri-tlo-, suffixed form of root *per- (3); related to experiri "to try," Greek peria "trial, attempt, experience," empeiros "experienced," Old Irish aire "vigilance," Gothic ferja "watcher," Old English fær "danger, fear" (see fear (n.)).