retrogressed

/R EH1 T R AH0 G R EH1 S T/
verb
  1. 1

    To return to an earlier, simpler or worse condition; to regress.

  2. 2

    To go backwards; to retreat.

  3. 3

    To return to bad behaviour; to relapse.

Antonyms

Source: https://en.wiktionary.org/wiki/retrogress, https://en.wiktionary.org/wiki/retrogressed