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