breakthrough Antonyms

severe setback throwback unsophisticated uncivilized setback rudimentary reverse reversal retrogressive relegation regressive regression recession primitive predicament uncivilised outmoded slowdown not updated big step backward worsened double whammy body blow undeveloped underdeveloped unprogressive nonprogressive fogyish glitch hiccup impasse blind alley outdated old-fashioned debit deadlock dated blow benighted backwards backward avoid archaic antique antiquated antediluvian ancient abdication decline degeneration