oath /ōTH, oʊθ 
/ ▸ noun (plural oaths /ōTHs, ōT͟Hz/) 1 a solemn promise, often invoking a divine witness, regarding one's future action or behavior: they took an oath of allegiance to the king.
▪ a sworn declaration that one will tell the truth, especially in a court of law: each took the oath and then gave evidence.
2 a profane or offensive expression used to express anger or other strong emotions: he exploded with a mouthful of oaths
he was muttering foul oaths.
– PHRASES under oath (also British on oath)
having sworn to tell the truth, especially in a court of law: he was made to testify under oath.
– ORIGIN Old English āth, of Germanic origin; related to Dutch eed and German Eid.
EnglishOxford New American Dictionary
