Definition of rampant adjective from the Oxford Advanced Learner's Dictionary

     

    rampant

     adjective
    adjective
    BrE BrE//ˈræmpənt//
     
    ; NAmE NAmE//ˈræmpənt//
     
     
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  1. 1(of something bad) existing or spreading everywhere in a way that cannot be controlled synonym unchecked rampant inflation Unemployment is now rampant in most of Europe.
  2. 2(of plants) growing thickly and very fast in a way that cannot be controlled
  3. Word Origin Middle English (as a heraldic term): from Old French, literally ‘crawling’, present participle of ramper ‘creep, crawl’, of unknown origin. From the original use describing a wild animal, arose the sense ‘fierce’, leading to the current notion of ‘unrestrained’.
See the Oxford Advanced American Dictionary entry: rampant