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