Definition of "adulterine" [a•dul•ter•ine]

• Characterized by adulteration; spurious. (adjective)
• Unauthorized by law; illegal. (adjective)
• Born of adultery: adulterine offspring. (adjective)

American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

• "The "adulterine" castles were destroyed, not quite so rapidly as Henry desired, but still with some energy."
• "Upon paying a fine to the king, the charter seems generally to have been readily granted; and when any particular class of artificers or traders thought proper to act as a corporation without a charter, such adulterine guilds, as they were called, were not always disfranchised upon that account, but obliged to fine annually to the king for permission to exercise their usurped privileges."
• "Sometimes we find a mound which seems to proclaim its position, but memory is silent, and the people of England, if the story of the chronicler be true, have to be grateful to Henry II, who set himself to work to root up and destroy very many of these adulterine castles which were the abodes of tyranny and oppression."