under oath

under oath

1. Having sworn or affirmed in a legally binding way to tell the truth.

   Synonym: on oath

   to lie under oath

• “under oath”, in Merriam-Webster Online Dictionary, Springfield, Mass.: Merriam-Webster, 1996–present.
• “under oath”, in Cambridge English Dictionary, Cambridge, Cambridgeshire: Cambridge University Press, 1999–present.
• “be on under oath” (UK) in Macmillan English Dictionary.