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