Here's what rhymes with massive.
passive impassive Words that almost rhyme with massive
passeth basses morasses gasses mashes amasses gnashes wrasses lavish lashes dashes brasses caches rashes sashes hashish smashes harasses raffish bashes cashes jazzes razzes flashes clashes crashes surpasses slashes thrashes stashes brazes trashes abashes rapacious pugnacious overpasses underpasses hourglasses demitasses calabashes gatecrashes active captive inactive adaptive reactive combative nonactive attractive interactive expansive proactive contrastive overactive refractive unattractive maladaptive hyperactive vasoactive psychoactive nonreactive counteractive radioactive extractive retroactive immunoreactive putrefactive nonradioactive