形容詞 litigious:

1. of or relating to litigation
2. inclined or showing an inclination to dispute or disagree, even to engage in law suits
   同義詞：contentious, combative, disputatious, disputative

1. The thing was not known to be litigious when purchased.
   那東西買來時(shí)大家都不知道它在法律上是有問題的。

li.ti.gious

adj.Law （形容詞）【法律】
Of, relating to, or characterized by litigation.
訴訟的：訴訟的，與訴訟有關(guān)的，或以訴訟為特點(diǎn)的
Tending to engage in lawsuits.
好訴訟的

來源：
Middle English
中古英語
from Old French
源自 古法語
from Latin lotigiôsus
源自 拉丁語 lotigiôsus
from lotigium [dispute]
源自 lotigium [爭論]
from lotig3re [to quarrel] * see litigate
源自 lotig3re [爭吵] *參見 litigate

【引伸】
liti.giously
adv.（副詞）
liti.giousness
n.（名詞）