Prolog rhymes with:
clague, clog, flog, lague, plog, slog, agog, bog, clague, clog, dague, flog, fog, fogg, frog, frogg, frogge, grog, grogg, haag, hog, hogg, hogge, jog, krog, lague, maag, mogg, og, ogg, parag, pirog, plog, pog, prague, rog, rogge, skog, slog, smog, tague, waag, zogg
Prolog sounds like:
paperless, parallax, parallels, paralysis, paralyze, paralyzes, parlays, parolees, paroles, payrolls, pearls, peerless, perales, peralez, perilous, perils, perlis, perls, perulac, pierrelouis, pirelli's, powerless, prologue, proulx