under oath

Related to under oath: swear under oath

under oath

Bound by a formal promise to tell the complete and honest truth about an event while on the witness stand in a trial. You are under oath as a witness in this trial, so you must answer my questions completely truthfully! Consider your answer carefully—you're still under oath.
See also: oath
Farlex Dictionary of Idioms.

under oath

Fig. bound by an oath; having taken an oath. You must tell the truth because you are under oath. I was placed under oath before I could testify in the trial.
See also: oath
McGraw-Hill Dictionary of American Idioms and Phrasal Verbs.

on/under ˈoath

(law) having made a formal promise to tell the truth in a court of law: Is she prepared to give evidence on oath? The judge reminded the witness that he was still under oath.
See also: oath, on
Farlex Partner Idioms Dictionary

under oath

Under a burden or responsibility to speak truthfully or perform an action faithfully.
See also: oath
American Heritage® Dictionary of the English Language, Fifth Edition.
See also:
  • on oath
  • on/under oath
  • witness
  • witness to
  • be (a) witness to (something)
  • be witness to something
  • be in at the death
  • be in at the death/kill
  • take an oath
  • in at the kill