Definition of oath
oathsplay \ˈōthz, ˈōths\
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 (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.
Examples of oath in a sentence
an oath to defend the nation
He uttered an oath and walked away.
Origin and Etymology of oath
Middle English ooth, from Old English āth; akin to Old High German eid oath, Middle Irish oeth
First Known Use: before 12th century
OATH Defined for English Language Learners
Definition of oath for English Language Learners
: a formal and serious promise to tell the truth or to do something
: an offensive or rude word that is used to express anger, frustration, surprise, etc.
OATH Defined for Kids
Definition of oath for Students
1 : a solemn promise to tell the truth or do a specific thing
2 : an obscene or impolite word used to express anger or frustration
Medical Definition of oath
—see hippocratic oath
Legal Definition of oath
1 : a solemn attestation of the truth of one's words or the sincerity of one's intentions; specifically : one accompanied by calling upon a deity as a witness
2 : a promise (as to perform official duties faithfully) corroborated by an oath — compare perjury
: under a solemn and especially legal obligation to tell the truth (as when testifying)
Seen and Heard
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