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Idiom

knock for six

idiom (verb phrase) B2
UK /ˈnɒk fə sɪks/
US /ˈnɑːk fər sɪks/

Meanings

idiom (verb phrase)

To shock or overwhelm someone emotionally, often leaving them stunned or upset.

knock for six: To shock or overwhelm someone emotionally, often leaving them stunned or upset.

Definition

To knock for six means to shock or overwhelm someone, leaving them very surprised or upset.

If something knocks you for six, it affects you very strongly and suddenly. It can mean you feel shocked, upset, or emotionally overwhelmed. In British English, it often suggests you are left struggling to react or cope for a moment.

Examples

  • The news of his sudden resignation really knocked me for six.
  • Losing the contract at the last minute knocked the whole team for six.
  • When she told me she was moving abroad, it knocked me for six.
  • That unexpected bill knocked him for six and he went quiet.
  • The final scene of the film knocked me for six.

Common mistake

Learners sometimes confuse this with being physically hit and use it for literal injuries, but it mainly describes a strong emotional shock.