A vulgar and most irrational vice, which happily is fast going out. Habitual swearing was usually typical of a bad officer. It may have originated in the custom too often demanded by law, of solemn asseverations on frivolous subjects.
·- ·adj & ·noun from Swear, v. II. Swearing ·p.pr. & ·vb.n. of <<Swear>>. ...
Webster's Dictionary of the English Language
[Oath] ...
William Smith's Bible Dictionary