Here's what rhymes with declassing.
classing passing massing gassing harassing amassing surpassing Words that almost rhyme with declassing
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 attacking planting scanning attaching branching drafting enhancing reacting camping chanting damping exacting handing panting relaxing spanning thanking banding branding flanking rambling slanting snapping snatching stabbing stacking tackling detaching dispatching planking recasting relapsing sapling smacking strapping tramping standing handling sampling advancing commanding demanding everlasting expanding financing adapting attracting contrasting overlapping enchanting extracting stamping combating distracting enacting trampling impacting spanking straddling unflagging unpacking interacting overhanging abstracting refracting supplanting outstanding subtracting counteracting transacting withstanding understanding transplanting notwithstanding subcontracting misunderstanding