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