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