Discover everything about the word " REBEL " in English: meanings, translations, synonyms, pronunciations, examples, and grammar insights - all in one comprehensive guide. The noun ' rebel ' has its origins in the Latin word 'rebellis,' which combines 're-' meaning 'again' or 'back' and 'bellum' meaning 'war.' In its earliest usage, 'rebellis' referred to a person who rose up or waged war against an established authority or government, signifying a defiance of the prevailing order. Definition of rebel noun in Oxford Advanced Learner's Dictionary. Meaning , pronunciation, picture, example sentences, grammar, usage notes, synonyms and more. Learn the meaning of rebel as a noun and a verb, with synonyms and example sentences. Find out how to pronounce rebel in British and American English, and explore its origin and usage.