Workbench rhymes with:
avalanche, bench, blanch, blanche, branch, branche, brunch, bulfinch, bunch, bunche, cinch, claunch, clench, clinch, clonch, conch, counterpunch, crunch, drench, entrench, ferencz, finch, flinch, french, goldfinch, grinch, hench, hinch, hostench, hunch, inch, jentsch, kinch, lancz, launch, lentsch, linch, lorincz, lunch, lynch, mcaninch, mcninch, mench, minch, munch, pinch, punch, quench, ranch, relaunch, rench, rentsch, retrench, samaranch, scrunch, stanch, staunch, stench, synch, tench, tinch, tranche, trench, winch, wrench