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