Here's what rhymes with tercentenary.
marry merry centenary nary very vary fairy bury dairy ferry wary cherry hairy seminary berry sherry tarry ternary canary parry unwary harry tare barre terry faerie wherry ordinary missionary dietary imaginary urinary cemetery prairie visionary honorary mercenary sedentary veterinary emissary scary remarry buffoonery legionary pessary apiary bicentenary elderberry nondairy necessary military secondary secretary temporary customary monetary pulmonary capillary coronary dictionary hereditary stationary adversary legendary momentary ancillary budgetary dysentery estuary functionary itinerary papillary sanguinary stationery cautionary luminary aviary bacillary actuary equerry humeri lapidary bilberry topiary plagiary literary arbitrary preliminary commentary monastery sanctuary solitary disciplinary pituitary sanitary unitary corollary planetary salutary apothecary commissary funerary mortuary obituary statuary confectionery deflationary dignitary epistolary genitourinary unsanitary beriberi breviary diversionary cassowary concessionary dromedary recessionary chokecherry nonhereditary sectary uncustomary contemporary unnecessary evolutionary subsidiary vocabulary fragmentary involuntary judiciary maxillary pecuniary reactionary tributary discretionary inflationary culinary fiduciary savagery expansionary interplanetary probationary supernumerary tutelary insanitary eleemosynary geostationary huckleberry voluptuary nonliterary extraordinary revolutionary beneficiary proprietary interdisciplinary exclusionary expeditionary paramilitary constabulary nonmilitary undersecretary elocutionary noninflationary cardiopulmonary multidisciplinary counterrevolutionary Words that almost rhyme with tercentenary
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 indirectly complementary intensely intently unfriendly apoplexy halfpenny hostelry deviancy preciously woodenly expressly incorrectly excellency complexly narcolepsy sacredly catalepsy reassembly penitently confusedly grotesquely ambivalently cognoscenti circumspectly equivalently