Thereafter rhymes with:
drafter, hereafter, rafter, after, drafter, hereafter, laughter, rafter, after, airlifter, drafter, drifter, hefter, hereafter, laughter, lenscrafter, lifter, rafter, shifter, shoplifter, snifter, softer, stifter, swifter, telecrafter, weightlifter, woofter
Thereafter sounds like:
thriftier, tributary, troubadour, trovatore