Here's what rhymes with mniiy.
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 sty stye slier apply reply imply nearby whereby hereby decry untie aquae deify retry spry amebae turfy lanai ripply supply thereby comply modify nuclei goodbye notify underlie alibi nullify samurai unify pupae termini typify descry edify mollify mortify overlie ramify vilify bonsai ossify triply vivify scurfy mummify shanghai banzais overbuy yuppify occupy alkali signify verify certify quantify alveoli amplify fortify magnify pacify ratify standby beautify lullaby terrify codify dignify liquefy resupply acidify firefly mystify blowfly horrify misapply reunify stupefy liquify overfly versify barfly prettify vitrify beatify drachmai gentrify speechify dandify identify justify satisfy stimuli clarify multiply qualify specify classify simplify testify butterfly glorify gratify purify rectify falsify solidify crucify personify demystify ultrahigh calcify emulsify petrify reclassify revivify cumuli scarify refortify syllabify intensify diversify indemnify oversupply detoxify dragonfly electrify preoccupy stratify stultify dissatisfy declassify hyperbolae solemnify exemplify disqualify objectify oversimplify misidentify transmogrify