Law vocabulary · Evidence & Proof

Oath

Meaning in law, with examples

/əʊθ/nounCommon term

In law, oath means: A formal and serious promise to tell the truth in court or to carry out official duties faithfully, usually spoken aloud in a set form of words.

In Turkish: yemin

How it is used

Witnesses 'take' or 'swear' an oath and then give evidence 'under oath'. People who do not wish to swear a religious oath can 'affirm' instead, which has the same legal effect. Lying under oath is perjury. Judges, officials and new lawyers also take oaths when they start their duties.

Example sentences

  1. Remember that you are under oath, Mr Clarke.

  2. The witness took the oath and confirmed her name and address.

Common collocations

  • under oath
  • take an oath
  • swear an oath
  • oath of office
  • lie under oath

More terms: Evidence & Proof

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This page explains English vocabulary for learners. It is not legal advice.