by 1570s, possibly late 14c., from un- (1) "not" + wary (adj.). Old English had unwær "incautious," unwærlic. Related: Unwarily.
the shrieks of unwary animals taken by surprise
some thieves prey especially on unwary travelers
unvarnished
unvarying
unveil
unwanted
unwarranted
unwary
unwashed
unwavering
unwearied
unwed
unwelcome
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