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look like the cat that ate the canary

Idioms  
  1. Also, look like the cat that swallowed the canary. Appear smug and self-satisfied. For example, After she hit her third winning shot, Jeannie looked like the cat that ate the canary. [Second half of 1800s]


Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

“You look like the cat that ate the canary — and then told the canary’s parents about it.”

From Washington Post