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