Here's what rhymes with octenary.
marry merry nary very ordinary vary fairy bury dairy ferry wary cherry hairy berry sherry tarry ternary canary parry unwary harry tare barre terry faerie wherry customary capillary coronary dietary urinary prairie honorary scary cautionary remarry buffoonery legionary pessary actuary apiary nondairy temporary arbitrary missionary pulmonary commentary dictionary hereditary imaginary stationary adversary legendary visionary budgetary corollary dysentery mercenary sedentary seminary veterinary commissary emissary itinerary papillary stationery centenary luminary aviary bacillary cassowary equerry humeri lapidary bilberry elderberry topiary plagiary uncustomary necessary military literary secondary secretary monetary solitary cemetery maxillary momentary pituitary reactionary sanitary unitary ancillary estuary planetary apothecary culinary functionary funerary mortuary obituary sanguinary statuary dignitary beriberi breviary diversionary dromedary tercentenary chokecherry sectary contemporary preliminary unnecessary evolutionary monastery sanctuary vocabulary disciplinary fragmentary judiciary pecuniary tributary salutary fiduciary savagery confectionery deflationary epistolary expansionary probationary supernumerary tutelary unsanitary concessionary huckleberry recessionary voluptuary elocutionary nonliterary extraordinary revolutionary subsidiary beneficiary involuntary proprietary discretionary inflationary exclusionary expeditionary genitourinary paramilitary insanitary nonmilitary geostationary bicentenary nonhereditary interplanetary constabulary eleemosynary interdisciplinary cardiopulmonary undersecretary multidisciplinary counterrevolutionary Words that almost rhyme with octenary
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 teddy bevy faery jenny kepi leggy recce sedgy veggie healthy steady wealthy deadly lengthy gentry unhealthy fleshy carefree sentry sexy sketchy spaghetti sweaty unsteady vestry belfry deathly gayety hefty machete confetti pebbly tempi testy breathy dressy pesky thready lefty wetly already directly especially twenty assembly scarcely elementary gently plenty epilepsy freshly immensely densely frenzy squarely deftly coquetry fleshly stealthy sullenly fidgety tensely trendy aplenty baronetcy libretti maidenly marquetry adeptly effendi ineptly friendly correctly complementary intensely intently unfriendly apoplexy halfpenny hostelry catalepsy deviancy preciously woodenly indirectly expressly incorrectly excellency grotesquely complexly narcolepsy sacredly cognoscenti reassembly penitently confusedly ambivalently equivalently circumspectly