5
reverse(verb, revert)
4
decay(verb, decline, reduce, fail, diminish)
4
fade(verb, drop, close, decline, reduce)
4
go back(verb, expression, phrasal verb, reduce, diminish)
4
lose ground(expression, degenerate, recede, ebb, relapse)
3
collapse(verb, reduce, slip, lapse, deteriorate)
3
descend(verb, decline, reduce, fail, diminish)
3
fall behind(verb, expression, phrasal verb)
3
get worse(verb, expression, idiom, decline, diminish)
3
lose
3
retire(verb, drop, close, reduce, withdraw)
3
retrovert
3
slip(verb, reduce, lessen, lapse, deteriorate)
3
slip back(verb, expression, fall, fail, degenerate)
2
backtrack(verb, move, forward)
2
dawdle
2
disimprove(verb, decline, reduce, fail, lower)
2
downgrade(verb, deteriorate)
2
elapse
2
go backwards(verb, phrasal verb)
10 years ago|4.9k views|share |citing 
APASmart Define. (2016). retrogress thesaurus. Retrieved September 25, 2026, from https://smartdefine.org/retrogress/thesaurus/synonyms
ChicagoSmart Define. 2016. "retrogress thesaurus" https://smartdefine.org/retrogress/thesaurus/synonyms (accessed September 25, 2026).
HarvardSmart Define 2016, retrogress thesaurus, Smart Define, viewed 25 September, 2026, <https://smartdefine.org/retrogress/thesaurus/synonyms>.
MLASmart Define. "retrogress thesaurus" 14 March 2016. Web. 25 September 2026. <https://smartdefine.org/retrogress/thesaurus/synonyms>