adulterine

Spurious; due to adulteration.

a knave apothecary, that administers the physick, and makes the medicine, may do infinite harm, by his old obsolete doses, adulterine druggs, bad mixtures, quid pro quo, &c.

Born of adultery.

Pertaining to adultery.

Illegal; unlicensed.

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[…]

One born of an adulterous union.