oath

noun pl. oaths

1. 1. a ritualistic declaration, typically based on an appeal to God or a god or to some revered person or object, that one will speak the truth, keep a promise, remain faithful, etc.
   2. the ritual form used in making such a declaration
   3. the thing promised or declared in this way
2. the irreverent or profane use of the name of God or of a sacred thing to express anger or emphasize a statement
3. a swearword; curse