Here's what rhymes with defy.
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 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 ply pry tri trie decry pri typify descry edify bonsai deify spry banzais yuppify apply supply reply thereby imply nearby whereby hereby modify certify notify fortify pacify ratify beautify pupae termini terrify untie codify dignify mortify overlie vilify aquae ossify triply vivify amebae blowfly stupefy lanai scurfy barfly prettify shanghai ripply overbuy justify satisfy specify signify testify verify butterfly goodbye gratify purify quantify underlie alibi amplify nullify rectify samurai unify amoebae liquefy mollify ramify acidify firefly mystify retry ultrahigh horrify misapply petrify liquify overfly versify mummify vitrify beatify drachmai gentrify refortify speechify syllabify dandify identify occupy stimuli clarify comply nuclei qualify alkali classify simplify glorify alveoli diversify magnify standby falsify lullaby solidify crucify personify resupply demystify detoxify stratify stultify calcify emulsify reunify revivify dissatisfy scarify declassify multiply intensify disqualify indemnify objectify oversupply dragonfly electrify reclassify hyperbolae exemplify oversimplify preoccupy cumuli solemnify misidentify transmogrify