SWEARER
Source: 566, 567
swearer. Swearer, n. one who swears or utters oaths
---
Swear″er (?), n. 1. 1. One who swears; one who calls God to witness for the truth of his declaration.
2. 2. A profane person; one who uses profane language.
Then the liars and swearers are fools. Shak.