dissentient

adjective

In opposition to a majority or official opinion.

noun

A person who opposes a majority or official opinion.

SYNONYMS

anti-complainingcontradictingcontrarydifferingdisagreeingdiscordantdissentingdissidentgainsayinghereticalheterodoxnegativenon-compliantnonconformistobjectingopposedopposingprotestingrebellingrebelliousrecusantrevolutionaryunorthodox