peril

Universal Words noun (formal or literary) 1 [U] serious danger: The country's economy is now in grave peril. * She seemed blissfully unaware of the peril she was in. 2 [C,usually pl.] ~ (of sth) the fact of sth being dangerous or harmful: a warning about the perils of drug abuse IDIOMS do sth at your (own) peril used to warn sb that if they do sth, it may be dangerous or cause them problems: Teachers ignore the importance of these results at their peril.