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