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