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