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