Simple Definition of sitting duck
: a person or thing that is easy to hit, attack, trick, etc.
Full Definition of sitting duck
: an easy or defenseless target
Examples of sitting duck in a sentence
The tourists were sitting ducks for local thieves.
<those stupid comments just made him a sitting duck for comedians>
First Known Use of sitting duck
Rhymes with sitting duck
geoduck, Habakkuk, horror-struck, Keokuk, Koyukuk, ladder truck, megabuck, motortruck, nip and tuck, pass the buck, push one's luck
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Thesaurus: All synonyms and antonyms for sitting duck
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