Here's what rhymes with subclassing.
classing passing massing gassing harassing amassing surpassing Words that almost rhyme with subclassing
laughing crashing clashing lashing graphing having flashing dashing thrashing caching slashing bashing calving cashing gnashing halving hashing staffing smashing splashing photographing lacking lasting cracking grasping glancing wrapping clapping clasping grabbing lagging cladding clanging lapping racking rapping rasping cramming lapsing ramming planning dancing hanging landing casting catching granting mapping matching packing ranking backing dragging fasting tapping tracking chatting grafting hatching masking rattling scratching taxing trapping banging banning batting blasting canning clamping collapsing crackling damning fanning flapping gasping grappling nagging padding patting sagging slamming slapping tanning basking bragging capping clanking cramping flagging hacking jamming manning matting patching planing prancing ranching sacking tacking tagging wagging waxing bagging blacking crafting cranking damming gagging napping banking advancing attacking planting scanning attaching attracting branching drafting reacting camping chanting damping handing panting relaxing spanning subtracting thanking banding branding flanking rambling slanting snapping snatching stabbing stacking tackling detaching planking recasting relapsing sapling smacking strapping supplanting tramping unflagging standing handling sampling commanding demanding everlasting financing adapting contrasting enhancing overlapping exacting stamping combating enacting trampling dispatching spanking straddling unpacking outstanding expanding enchanting extracting overhanging abstracting distracting impacting refracting subcontracting understanding interacting counteracting transacting transplanting withstanding notwithstanding misunderstanding