what is contentious law?

Answer 1

When someone sues you and you don't like it, you call them contentious or litigious. It means you don't want to be bothered with their side of the story.

In the dictionary, "contentious" is defined as "exhibiting an often perverse and wearisome tendency to quarrels and disputes."

Answer 2

contentious

(adj): inclined or showing an inclination to dispute or disagree,
even to engage in law suits;