indifferently vs so-so

indifferently

adv
  • Without great care; without sufficient attention or thought. 

  • Without distinction; impartially, objectively. 

  • Tolerably; passably. 

so-so

adv
  • Neither very well nor very poorly. 

adj
  • Neither good nor bad; tolerable, passable, indifferent. 

How often have the words indifferently and so-so occurred in a corpus of books? (source: Google Ngram Viewer )