oath

oath · noun

imported

Definitions

noun

  1. 1.

    A solemn promise, often invoking a divine witness, regarding one's future actions or behavior.

  2. 2.

    A profane or offensive expression used to show anger or emphasis; a swear word.

Forms

plural: oaths

Phrases & expressions

  • under oath — having made a formal promise to tell the truth, especially in court
  • take an oath — to make a solemn promise
  • oath of allegiance — a formal promise to be loyal to a country or organization

Related words

Etymology

From Old English āþ ("oath, sworn promise"), from Proto-Germanic aiþaz. Related to Old Norse eiðr and German Eid.