trial-and-error

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• November 1. 2013 from wordnet.princeton.edu

  trial-and-error — adjective — english

  trying out various means or theories until error is satisfactorily reduced or eliminated; "he argued that all learning is a trial-and-error process that resembles biological evolution"

• March 31. 2016 from wordnet.princeton.edu

  trial-and-error — adjective — english

  relating to solving problems by experience rather than theory; "they adopted a trial-and-error procedure"