OATH

n. 1 vow, avowal, pledge, promise, word (of honour), promise, plight, guarantee or guaranty, warrant or warranty, (sworn) statement, Archaic troth She has taken an oath to tell the whole truth 2 curse, profanity, blasphemous language or expression or word, imprecation, malediction, swear-word, expletive, four-letter word, obscenity, dirty word The door slammed on his finger and he muttered a foul oath