imperils; US imperiled or British imperilled; US imperiling or British imperilling
formal
: to put (something or someone) in a dangerous situation : endanger
The toxic fumes imperiled the lives of the trapped miners.
The financial health of the company was imperiled by a string of bad investments.
a list of imperiled species
Cite this Entry
“Imperil.” Merriam-Webster.com Simple Definition, Merriam-Webster, https://www.merriam-webster.com/simple/imperil. Accessed 24 Jun. 2026.
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