Definition of: rebel

(ri·bel′) v.i. ·belled, ·bel·ling
1. To rise in armed resistance against the established government or ruler of one's land.
2. To resist any authority or established usage.
3. To react with violent aversion: usually with at.
—reb·el (reb′əl) noun
One who rebels; specifically, one who espoused the American Revolution, or the cause of the South during the Civil War.
—adjective Rebellious; refractory. [<OF rebeller <L rebellare make war again <re- again + bellare make war <bellum war. Doublet of REVEL.]