lie through your teeth

/ˌlaɪ θruː jə ˈtiːθ/INFORMAL · B2

Meaning

to say something you know is completely false

Examples

  1. 1He was lying through his teeth when he said he'd never seen the letter.
  2. 2The salesman lied through his teeth about the car's history.
  3. 3Maria lied through her teeth, claiming she'd been at home, although three people saw her at the party.
  4. 4Don't believe a word he says; he'll lie through his teeth to get what he wants.
  5. 5Were you lying through your teeth when you said you loved my cooking?

Grammar

Only lie changes: lies, lying, lied. your changes to match the person.

More idioms about honesty and secrets

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