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Idiom

on thin ice

idiom B2
UK /ɒn ˌθɪn ˈaɪs/
US /ɑn ˌθɪn ˈaɪs/

Meanings

idiom

In a risky or unstable situation where one wrong move could cause trouble or failure.

on thin ice: In a risky or unstable situation where one wrong move could cause trouble or failure.
idiom

Close to losing someone’s approval or trust because of repeated mistakes or bad behavior.

on thin ice: Close to losing someone’s approval or trust because of repeated mistakes or bad behavior.

Definition

In a risky situation where you could easily get into trouble or lose support.

If you are on thin ice, you are in a dangerous or uncertain position. A small mistake could lead to serious consequences, such as getting fired, punished, or losing someone’s trust. It often refers to relationships, jobs, or rules where patience is running out.

Examples

  • After missing two deadlines, I’m on thin ice with my boss.
  • If you break curfew again, you’ll be on thin ice with your parents.
  • The company is on thin ice financially after the lawsuit.
  • He knew he was on thin ice when he showed up late for the third time.

Common mistake

Learners sometimes say “in thin ice” instead of “on thin ice.”