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