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