1. oath - Noun
2. oath - Verb
A solemn affirmation or declaration, made with a reverent appeal to God for the truth of what is affirmed.
A solemn affirmation, connected with a sacred object, or one regarded as sacred, as the temple, the altar, the blood of Abel, the Bible, the Koran, etc.
An appeal (in verification of a statement made) to a superior sanction, in such a form as exposes the party making the appeal to an indictment for perjury if the statement be false.
A careless and blasphemous use of the name of the divine Being, or anything divine or sacred, by way of appeal or as a profane exclamation or ejaculation; an expression of profane swearing.
Source: Webster's dictionaryexpletives were deleted Source: Internet
they took an oath of allegiance Source: Internet
AAP national convener Arvind Kejriwal took oath as the Chief Minister of Delhi for the third consecutive time on Sunday at the city’s Ramlila Maidan where a multi-level security arrangement has been put in place. Source: Internet
Actus reus The actus reus of perjury might be considered to be the making of a statement, whether true or false, on oath in a judicial proceeding, where the person knows the statement to be false or believes it to be false. Source: Internet
According to the Norman writer William of Jumièges, William had meanwhile sent an embassy to King Harold Godwinson to remind Harold of his oath to support William's claim, although whether this embassy actually occurred is unclear. Source: Internet
According to the letter, Bartl denied under oath that occurred. Source: Internet