Definition
"Adulterine" is an archaic term that describes something illegitimate, specifically something of impure origin or descent, often related to property or inheritance. It usually refers to children born as a result of adultery, especially in the context of medieval land law. Think of it as a label for something that's tainted or has a questionable beginning. It's not used much in modern language. It implies a violation of established rules or norms. It is most frequently associated with a child born out of wedlock, with at least one parent already married to someone else.