Mammoth Uncensored Word List:
495 words ending with us, 12 letters long

acanthaceous achlamydeous acidophilous acrocephalus adscititious advantageous adventitious agaricaceous altitudinous ambidextrous amentiferous amphicoelous amphistomous amphitropous ampullaceous anemochorous anemophilous angiocarpous angiostomous ankylosaurus anophthalmus anthocarpous anthophilous antibacchius antibarbarus antipetalous antisepalous antivenomous antoninianus apocynaceous argillaceous arthropodous ascomycetous assentaneous asynchronous atheromatous bardolatrous bathophilous biohazardous bombacaceous bootylicious brachycerous brachylogous brontosaurus burseraceous cacophonious calycoideous cantankerous capillaceous carbonaceous carpophagous cauliflorous caulimovirus cedrelaceous cementitious chaetiferous chasmogamous chiropterous cichoraceous circumfluous circumradius cirrocumulus cirrostratus coleopterous collembolous complicitous compunctious conchiferous contemptuous conterminous contumacious contumelious coprophagous coprophilous corallaceous corollaceous cotyledonous crepusculous cryptococcus cryptogamous cryptonymous cumulocirrus cumulonimbus cunnilinctus cupuliferous cyclostomous cymotrichous cynocephalus dasyphyllous dendrologous diatomaceous disanalogous disaventrous disciflorous discophorous discourteous disingenuous disputatious dodecagynous dodecandrous doloriferous droseraceous echinococcus electrotonus elytrigerous endophyllous enophthalmus enterococcus equinumerous erythematous eurythermous exalbuminous exophthalmus exsanguinous extraosseous extravillous ferrugineous flammiferous frondiferous fructiferous fructivorous furfuraceous gallinaceous gametogenous gamopetalous gamophyllous gamosepalous gastropodous gentilitious geraniaceous glandiferous glaucomatous graminaceous haemolyticus hagiolatrous hapaxanthous hebetudinous hectocotylus heliolatrous heliophilous hematogenous hepadnavirus hepatogenous heteroecious heterogamous heterogenous heterogonous heterogynous heterologous heteromerous heteronomous heteronymous heterotopous heterozygous hippophagous hippopotamus homochromous homoeomerous homoiomerous homomorphous homothermous hydrophanous hydrophilous hydrophobous hydrophytous hygrophilous hypochlorous hypocotylous hypognathous hypothalamus iconolatrous idiomorphous idiothermous impetiginous inauspicious incommodious inconcinnous incontiguous infelicitous inharmonious inimicitious innutritious insalubrious interfibrous interosseous interspinous intraosseous iracundulous isostemonous keratogenous lagomorphous lapidicolous laticiferous latitudinous leiotrichous ligniperdous limnophilous litholatrous lithophagous lithophilous loganiaceous logodaedalus lomentaceous luminiferous lymphomatous macronucleus macrophagous macropterous mallophagous matriclinous matroclinous megalosaurus melliphagous meretricious mesognathous mesomorphous mesophyllous metagnathous metamorphous microdontous micronucleus microphagous microphallus micropterous microsporous microstomous microvillous misventurous momentaneous monadelphous monodelphous monomorphous monopetalous monophyllous monosepalous monospermous monostichous monotrichous moschiferous mucilaginous multifarious multifibrous multiflorous multiloquous multivarious mycetomatous myxedematous myxomycetous necrophagous necrophilous necrophorous neuropterous nimbostratus nitrophilous nonambiguous noncancerous nonconscious nondeciduous nondelirious nonedematous nonfrivolous nonglamorous nonhazardous noninjurious nonlitigious nonmalicious nonmelodious nonoxygenous nonpoisonous nonreligious nonsulfurous nonterminous nontyrannous nonunanimous obreptitious obstreperous obstropalous obstropulous ochroleucous octastichous octopetalous octosepalous octostichous odontomatous oleoresinous oligophagous ombrophilous ombrophobous oncornavirus ophiolatrous ophiophagous orchidaceous orichalceous orthologuous orthopterous orthotropous ostentatious osteodermous overcautious overcovetous overgenerous overpopulous overspacious overstudious overvigorous oxycephalous pachycarpous pachydermous paludicolous pandanaceous pantophagous papuliferous paragnathous paramorphous paranthropus parastichous parsimonious patriclinous patroclinous pectinaceous percutaneous pergameneous perimorphous peritrichous pertinacious pervicacious petaliferous phaenogamous philadelphus photophilous phyllopodous physostomous phytophagous phytophilous picornavirus platanaceous plecopterous pleomorphous plumbaginous plumbiferous plumulaceous pneumococcus polychaetous polychromous polyglottous polymorphous polyomavirus polypetalous polyphyllous polysepalous polystichous pompholygous porcelainous porcelaneous porcellanous portmanteaus postliminous poststimulus precancerous preconscious preposterous presumptuous primulaceous proditorious pseudonymous pyritiferous pyroligneous quadrumanous querimonious radicicolous radicivorous rambunctious ramentaceous resiniferous rhizocarpous rhizophagous rhizophilous rumgumptious sacrilegious salsolaceous saltatorious salutiferous sanguiferous sanguivorous santalaceous sapindaceous saprophagous sarcophagous scatophagous schistaceous schizogonous schizopodous schorlaceous scitamineous scolopaceous seleniferous semiluminous semilustrous seminiferous semiprecious semivitreous serpentinous silicicolous siliciferous siliquaceous simultaneous sinanthropus slaughterous smilacaceous soboliferous solitudinous somniloquous soporiferous spermophilus splendidious spongicolous sporophorous stanniferous steatomatous steatopygous stegocarpous stelliferous stenophagous stipulaceous strophanthus styracaceous subconscious subcutaneous subdelirious substantious succedaneous sudoriferous sudoriparous supercilious superserious superzealous suppositious synantherous syndactylous syngenesious teleostomous temporaneous teratogenous teratomatous testudineous tetrapterous tetrasporous thaumaturgus thermogenous thiobacillus titaniferous trachomatous trachypterus tralaticious tralatitious transpicuous triadelphous tricephalous trichotomous tridactylous tropophilous tuberiferous turbinacious ultraserious ultraviscous unadventrous unauspicious uncensorious unchivalrous uncourageous underzealous unfastidious unglamourous ungregarious unharmonious unlibidinous unlugubrious unmiraculous unpropitious unprosperous unscrupulous unsolicitous unsuspicious untremendous untumultuous ustilaginous vaginicolous vainglorious verbenaceous verisimilous viruliferous xanthomatous xeromorphous zygomorphous zygomycetous