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