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