Mopboard rhymes with:
chipboard, clapboard, clipboard, shipboard, aboveboard, baseboard, billboard, blackboard, cardboard, checkerboard, chessboard, chipboard, clapboard, clipboard, containerboard, dartboard, dashboard, fiberboard, fibreboard, fingerboard, floorboard, hardboard, headboard, inboard, keyboard, linerboard, onboard, outboard, overboard, paperboard, pegboard, plasterboard, pressboard, scoreboard, seaboard, shipboard, skateboard, smorgasbord, snowboard, springboard, storyboard, surfboard, switchboard, wallboard, washboard
Mopboard sounds like:
mahabharata, manafort, maneuvered, manford, manfred, manfredi, manfredo, mavrodi, mefferd, meffert, mefford, membered, mofford, monfort, monforte, mumford, munford