Hostility that results in active resistance, opposition, or contentiousness.

对抗，对立，敌对，敌意由于强烈。

youdao

But we need to keep in mind that the healthy separateness we are discussing here is not intended to mean indifference or even contentiousness with others.

但是我们需要记住，我们这里讨论的健康的独立性，并不意味着对他人冷漠或者和他人对着干。

youdao

"It's helpful to get any of that contentiousness and competitiveness behind you, " he says.

FORBES: Election 2008

Again, to be fair, the lack of novelty does not negate the contentiousness of the issues.

BBC: First minister's questions

In fact, she has often worn her contentiousness and blunt approach, when negotiating, on her sleeve.

FORBES: General H. Norman Schwarzkopf: Negotiator and Military Man