13 letters
- heinousnesses18
- hematophagous26
- heterocystous21
- heterogeneous19
- heteropterous19
- heterosporous19
- hideousnesses18
- hilariousness18
- homogeneously25
- housebreakers23
- housebreaking26
- housecleaning24
- househusbands24
- housekeepings26
- houselessness18
- housepainters20
- housetraining20
- housewarmings25
- housewiferies22
- hymenopterous25
- hyperarousals22
- hypercautious25
- ignominiously24
- illustriously20
- impecuniously28
- imperiousness21
- impetuousness22
- incongruously25
- inconspicuous26
- incredulously24
- incuriousness20
- industriously20
- inefficacious27
- ingeniousness19
- ingenuousness20
- inhomogeneous23
- injudiciously32
- injuriousness26
- innocuousness21
- insectivorous22
- insidiousness17
- instantaneous17
- interboroughs22
- intermountain20
- intravenouses20
- intravenously23
- invidiousness21
- irreligiously20
- isochronously23
- jealousnesses25
- judiciousness29
- laboriousness19
- lecherousness21
- lepidopterous22
- litigiousness18
- loutishnesses18
- ludicrousness21
- luxuriousness25
- magnanimously27
- maliciousness22
- marvelousness23
- medicamentous25
- meetinghouses22
- mellifluously27
- melodiousness20
- meritoriously20
- merrythoughts25
- metalliferous22
- microphyllous29
- miscellaneous23
- mischievously29
- mispronounced26
- mispronounces25
- momentousness22
- monstrousness19
- mountainously23
- mountainsides20
- mountebankery28
- mountebanking29
- mousetrapping26
- mouthbreeders23
- mouthwatering25
- mucocutaneous26
- multitudinous22
- murderousness20
- mycetophagous29
- necessitously21
- nervousnesses20
- nickeliferous26
- nonautonomous21
- noncontagious22
- noncontiguous23
- noncontinuous22
- nongregarious20
- nonhomologous24
- nonindigenous21
- noninfectious23
- nonleguminous24
- nonmonogamous25
- nonnutritious18
- noxiousnesses23
- obliviousness23
- obnoxiousness26
- obviousnesses22
- odoriferously21
- odorousnesses16
- officiousness24
- ominousnesses19
- onerousnesses16
- openmouthedly27
- opprobriously26
- outbargaining23
- outdelivering23
- outdistancing22
- outgeneraling21
- outglittering20
- outintriguing21
- outmaneuvered24
- outmanipulate23
- outorganizing29
- outperforming26
- outplacements25
- outpoliticked26
- outpopulating25
- outrebounding23
- outreproduced23
- outreproduces22
- outspokenness23
- outstandingly22
- outstretching22
- outwardnesses19
- overambitious24
- overconscious25
- overcredulous24
- overdiscounts23
- overencourage24
- overingenious22
- overnourished22
- overnourishes21
- overseriously21
- overzealously31
- ovoviviparous29
- packinghouses29
- papillomatous25
- paramountcies24
- pendulousness22
- penuriousness20
- perspicacious26
- perspicuously27
- pestiferously23
- phycomycetous32
- piteousnesses18
- platitudinous21
- plenitudinous22
- plenteousness20
- polychotomous28
- polyphonously29
- pompousnesses24
- ponderousness20
- porcellaneous23
- postbourgeois22
- preannouncing26
- precipitously26
- prestigiously22
- pretentiously21
- pretournament22
- prolegomenous24
- promiscuously27
- pronounceable26
- pronouncement26
- proteinaceous21
- punctiliously26
- pusillanimous24
- querulousness27
- rapaciousness21
- rapturousness19
- raucousnesses19
- rectitudinous20
- rediscounting22
- reencountered20
- refoundations20
- religiousness18
- rencountering22
- rendezvousing32
- renouncements23
- repetitiously20
- resourcefully25
- righteousness19
- riotousnesses15
- rockhoundings28
- roundednesses18
- routinization25
- ruinousnesses17
- rumbustiously25
- sagaciousness20
- salaciousness19
- sanctimonious22
- scrumptiously27
- seditiousness16
- semiconscious24