oath
noun
\ ˈōth
\
\
plural oaths\ ˈōt͟hz
, ˈōths \
, ˈōths \
Definition of oath
1a(1)
: a solemn usually formal calling upon God or a god to witness to the truth of what one says or to witness that one sincerely intends to do what one says
(2)
: a solemn attestation of the truth or inviolability of one's words
The witness took an oath to tell the truth in court.
b
: something (such as a promise) corroborated by an oath
They were required to swear an oath of loyalty. took the oath of office
2
: an irreverent or careless use of a sacred name
broadly
: swear word
He uttered an oath and stormed away.