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