Kaplin rhymes with:
caplin, aplin, applin, caplin, taplin, aplin, applin, caplin, champlin, choplin, coplin, eplin, esplin, joplin, kemplin, koplin, kopplin, pamplin, poplin, striplin, tamplin, taplin, templin
Kaplin sounds like:
kaplain, kaplan, kappelman, kevlin, kopelman, koplan, koplin, koppelman, kopplin