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