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