from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. One who is unfaithful to the marriage vow.
from the GNU version of the Collaborative International Dictionary of English
- n. One who swerves from and is unfaithful to the marriage vow.
from The Century Dictionary and Cyclopedia
- n. One who is false and unfaithful to the marriage-vow.
bed + swerver, coined by Shakespeare. (Wiktionary)