dissenter
noun
- one who disagrees in matters of opinion, belief, etc.
Wiktionary
noun
Etymology: Etymology tree English dissent Proto-Indo-European *-yósder. Proto-Italic *-āzijos Latin -āriusnom. Latin -āriusbor. Proto-Germanic *-ārijaz Proto-West Germanic *-ārī Old English -ere Middle English -ere English -er English dissenter From dissent + -er.
- Someone who dissents (disagrees), especially from an established church.
“As my study proceeded, I began to see that an investigation of organizational morality should also explore managerial dissenters, so-called whistleblowers, many of whom take stands against their organizations on grounds that they define as moral.”