Definition of considerable adjective from the Oxford Advanced American Dictionary

        

    considerable

     adjective
    adjective
    NAmE//kənˈsɪdərəbl//
     
    (formal)
     
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  1. 1  great in amount, size, importance, etc. synonym significant
  2. 2 The project wasted a considerable amount of time and money. Damage to the building was considerable. Considerable progress has been made in finding a cure for the disease.
See the Oxford Advanced Learner's Dictionary entry: considerable