Definition of imperil in US English:


verbimperilled, imperilling, imperiled, imperils, imperiling

[with object]
  • Put at risk of being harmed, injured, or destroyed.

    ‘its fast-growing debt imperils the nation's future’
    • ‘It imperils my university's international programs, which are something I like very much in this nearly 9,000 student regional institution.’
    • ‘Consequently, the development of a fully operational quantum computer would imperil our personal privacy, destroy electronic commerce and demolish the concept of national security.’
    • ‘Moreover, by destroying her immune system, ‘my treatment imperils my health.’’
    • ‘It also plunders natural resources, imperils posterity, and jeopardizes self determination.’
    • ‘Sure, it imperils our GPAs, and we will have to spend a lot of time pestering professors to ensure that our grades do not take a downward turn from such an annoying and useless course.’
    • ‘He was said to be the source of the description of the chancellor as ‘psychologically flawed’ and that would have fitted: he always seemed ready to do anything and destroy anyone who imperilled his man.’
    • ‘It loses votes, chews up a tonne of money, confers no apparent economic benefits and imperils the ‘clean green’ image upon which our exporters rely and our citizenry prides itself.’
    • ‘Twenty percent of the world's freshwater fish species are now imperiled because of damage to waters and watersheds on which they depend.’
    • ‘The dangers posed to them by superstores and online sellers don't just threaten some quaint form of distributing goods, they imperil the fabric of neighborhoods and towns.’
    • ‘But the greatest threat to our national security - and that of the next generation - is the insecurity that imperils the lives and well-being of millions of our children.’
    • ‘One reason has been reluctance among uniformed officers to criticize policies related to race or gender for fear of imperiling their careers by appearing politically incorrect.’
    • ‘And the cancer risk does not just affect consumers; it also imperils tens of thousands of farmers, field hands, and migrant laborers.’
    • ‘Here's another comedy in which a neurotic schmuck is imperilled and injured in a series of encounters with his new in-laws.’
    • ‘But women's groups and many public officials responsible for enforcing child support are battling the movement, which they say imperils children.’
    • ‘Either one of these outcomes would imperil democracy; together they not only injure the country but also cut off the avenues of repair.’
    • ‘When landscape is destroyed, culture is imperiled.’
    • ‘War imperils independent thought and speech; governments often invoke patriotism to enforce conformity.’
    • ‘He warned a return to large and extended deficit spending by the Government could risk driving interest rates higher and imperil economic fundamentals.’
    • ‘Allowing workers to divert some of this money into the stock market will not only put their retirement future at risk, it will imperil the federal government's ability to keep its commitment to current retirees.’
    • ‘While the species has made a modest recovery in the past 50 years, we still do not fully understand its needs, and the changing character of the West itself now further imperils these charismatic animals.’
    endanger, jeopardize, risk, put at risk, put in danger, expose to danger, put in jeopardy, expose, leave vulnerable, put someone's life on the line
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Late Middle English: from peril, probably on the pattern of endanger.