the cat that ate the canary

the cat that ate the canary

Someone who is smugly pleased or self-satisfied. After her promotion, Janet spent the rest of the day looking like the cat that ate the canary. Look at those kids with their ice creams—the cats that ate the canaries!
See also: ate, canary, cat, that
Farlex Dictionary of Idioms.

the cat that ate the canary

Happy, often in a selfsatisfied way. Someone who was very pleased—and often smug—was compared to a house cat that figured out a way to liberate a pet bird from its cage and enjoy the aftermath.
See also: ate, canary, cat, that
Endangered Phrases by Steven D. Price
See also:
  • the cat that swallowed the canary
  • all-over oneself
  • fish-eating grin
  • pie-eating grin
  • coprophagous grin
  • stay hungry
  • smile like a Cheshire cat
  • smiling like a Cheshire cat
  • ate
  • ate up with someone/something
References in periodicals archive
They feel like the cat that ate the canary, sitting quietly in the corner hoping no one will notice.
A modest fellow, BP downplays the coup but a glint in the eye reminds one of the cat that ate the canary. Other BMWers privately admit to being astonished at their good fortune.