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