revisionism

/ษนษชหˆvษชส’ษ™หŒnษชzษ™m/
noun
  1. 1

    The advocacy of a revision of some accepted theory, doctrine or a view of historical events.

  2. 2

    An evolutionary form of Marxism, abandoning some of its original principles.

Source: https://en.wiktionary.org/wiki/revisionism