Here's what rhymes with opacify.
high thy vi hi shy sigh fi hy thigh vie psi hai cy fy sy thei phi by my why die lie y buy fly sky guy justify tie bi bye chi dye nigh pi pie spy thai dei fry ly quae rye sly ty wir awry lye mai muy nai pacify wry kai lai luy mei tai wai sty ossify stye versify slier apply dry supply try cry specify defy testify verify butterfly certify ply nullify pry tri trie pri terrify typify untie edify overlie personify acidify aquae bonsai deify firefly spry amebae horrify turfy lanai overfly scurfy mummify shanghai overbuy thereby deny rely satisfy hereby modify classify signify notify purify underlie alibi alveoli diversify ratify unify belie falsify lullaby amoebae codify crucify descry dignify mollify oversupply ramify vilify mystify stultify vivify calcify emulsify petrify stupefy scarify prettify vitrify beatify speechify banzais dandify yuppify identify reply imply nearby occupy whereby clarify comply qualify alkali simplify glorify goodbye gratify intensify amplify fortify magnify rectify samurai beautify decry pupae solidify termini liquefy resupply demystify detoxify retry stratify triply ultrahigh blowfly misapply reunify dissatisfy liquify barfly declassify drachmai ripply syllabify stimuli multiply nuclei standby disqualify indemnify mortify objectify dragonfly revivify hyperbolae gentrify refortify solemnify exemplify quantify oversimplify electrify preoccupy reclassify transmogrify cumuli misidentify