swearer

/ˈswɛrər/
noun
  1. A person who uses rude or offensive language; someone who curses.
    • He is known as a frequent swearer, even in casual conversation.
    • My grandfather was a mild swearer, only using a few mild words.
    • The teacher asked the habitual swearer to watch his language.
  2. A person who makes a formal promise or oath.
    • Every swearer in the courtroom must tell the truth.
    • The oath required each swearer to raise their right hand.
    • As a swearer of the pledge, she took her duty seriously.
Synonyms