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