I. adjective (mightier; -est) Date: before 12th century possessing might ; powerful , accomplished or characterized by might , great or imposing in size or extent ; extraordinary , II. adverb Date: 14th century extremely , very , Usage: Mighty used as an intensive usually conveys a folksy down-home feeling
. It is used especially to create a chatty style or to stress a rural atmosphere . In a more formal context, ~ is used to create emphasis by drawing attention to itself .