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