dissenter
noun /dɪˈsentə(r)/
/dɪˈsentər/
- a person who does not agree with opinions that are officially or generally accepted
（对官方或普遍认可的意见）持异议者，持不同意见者 - The dissenters at the meeting were shouted down.
会上持不同意见的人被喝倒彩了。
- The dissenters at the meeting were shouted down.