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