the GNU version of the Collaborative International Dictionary of English
adj. Guilty of, or given to, adultery; pertaining to adultery; illicit.
adj. Characterized by adulteration; spurious.
The Century Dictionary and Cyclopedia
Pertaining to or characterized by adultery; given to adultery.
Illicit: said of combinations or relations of any kind.
Spurious; corrupt; adulterated: as, “forged and adulterous stuff,” Casaubon, Of Credulity (trans.), p. 297.
WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
adj. not faithful to a spouse or lover
adj. characterized by adultery
Word Usage
"The term adulterous, I conceive, may chiefly relate to the Jews, who being nationally espoused to God by covenant, every sin of theirs was in a peculiar manner spiritual adultery."