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