oath — OET · Shobdo

oath

noun

1 an oath of allegiance to the king:

vow, sworn statement, promise, pledge, avowal, affirmation, attestation, word of honour, word, bond, guarantee, guaranty;

archaic troth.

2 he uttered a stream of unrepeatable oaths:

swear word, profanity, expletive, four-letter word, dirty word, obscenity, imprecation, curse, malediction, blasphemy;

vulgarism, vulgarity;

swearing, bad/foul language, strong language;

informal cuss, cuss word.

oath Oxford Dictionary of English