ran·cor·ous
adjective/ˈræŋkərəs/
/ˈræŋkərəs/
(formal)- having or showing feelings of hate and a desire to hurt other people, especially because you think that somebody has done something unfair to you
怨恨；怨毒 - a rancorous legal battle
充满敌意的法律争端 - The talks became increasingly bitter and rancorous.
谈判变得越来越激烈和充满敌意。
- a rancorous legal battle