dissent Look up dissent at Dictionary.com
c.1425, Scottish, from L. dissentire "differ in sentiments," from dis- "differently" + sentire "to feel, think." Dissenter in the religious sense is from 1639; with a capital D- from 1679.
"Has there ever been a society which has died of dissent? Several have died of conformity in our lifetime." [Jacob Bronowski]