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