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