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