Synonyms of retrogressive

2 Syllables
rearward, standpat, behind, astern, tory
3 Syllables
flatitious, inverted
4 Syllables
obscurantist, regressive, retrograde, reactionary, reactionaries
5 Syllables
degenerate, degenerated
6 Syllables
degenerative
8 Syllables
counterrevolutionary