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