Here's what rhymes with cardiopulmonary.
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belly allele jelly smelly deli telly underbelly vermicelli many messy heavy ready fairly rarely barely semi petty levy penny antennae heady levee medley unfairly jetty machete teddy bevy faery jenny kepi leggy recce sedgy veggie healthy steady wealthy deadly lengthy gentry unhealthy fleshy carefree sentry sexy sketchy sweaty unsteady vestry belfry deathly gayety hefty confetti pebbly tempi testy breathy dressy marquetry pesky thready lefty wetly already especially twenty assembly scarcely elementary gently plenty freshly immensely densely frenzy squarely deftly spaghetti coquetry fleshly stealthy sullenly fidgety tensely trendy aplenty baronetcy libretti maidenly adeptly effendi ineptly directly friendly correctly intensely epilepsy intently unfriendly halfpenny hostelry reassembly preciously woodenly indirectly complementary incorrectly apoplexy excellency complexly narcolepsy sacredly deviancy expressly confusedly grotesquely catalepsy cognoscenti penitently ambivalently circumspectly equivalently