|Noah Webster's Dictionary|
1. (n.) One who swears; one who calls God to witness for the truth of his declaration.
2. (n.) A profane person; one who uses profane language.
Swearer (1 Occurrence)
Ecclesiastes 9:2 All things come alike to all; there is one event to the righteous and to the wicked; to the good and to the clean and to the unclean; to him that sacrificeth and to him that sacrificeth not; as is the good, so is the sinner, and he that sweareth, as he that feareth an oath. (See NAS)