'Swearer' definitions:

Definition of 'swearer'

From: WordNet
noun
Someone who uses profanity
noun
Someone who takes a solemn oath

Definition of 'Swearer'

From: GCIDE
  • Swearer \Swear"er\, n.
  • 1. One who swears; one who calls God to witness for the truth of his declaration. [1913 Webster]
  • 2. A profane person; one who uses profane language. [1913 Webster]
  • Then the liars and swearers are fools. --Shak. [1913 Webster]