To refuse allegiance to and oppose by force an established government or ruling authority.
To resist or defy an authority or a generally accepted convention.
To feel or express strong unwillingness or repugnance: She rebelled at the unwelcome suggestion.
One who rebels or is in rebellion: "He is the perfect recruit for fascist movements: a rebel not a revolutionary, contemptuous yet envious of the rich and involved with them” ( Stanley Hoffman).