noun

the holding or expression of opinions at variance with those commonly or officially held.

there was no dissent from this view

disagreement,lack of agreement,difference of opinion,argument,dispute,demur,disapproval,objection,protest,opposition,defiance,insubordination,conflict,friction,strife,arguing,quarrelling,wrangling,bickering

verb

hold or express opinions that are at variance with those commonly or officially held.

two members dissented from the majority