13 letters
- familiarities20
- farcicalities23
- farkleberries24
- feasibilities20
- fellmongeries24
- fieldstripped25
- filmographies27
- fishabilities22
- flamboyancies29
- flexibilities28
- flexographies31
- fluorimetries21
- fluorometries21
- fluoroscopies24
- formabilities23
- fortnightlies22
- freemasonries20
- frontispieces23
- functionaries22
- fungibilities24
- gallimaufries24
- gastrectomies21
- gastroscopies21
- geoscientists19
- geostrategies17
- gerontologies19
- gimcrackeries28
- glockenspiels28
- gonadectomies23
- grandiosities17
- granularities18
- grotesqueries25
- gullibilities22
- gymnospermies27
- gynaecologies24
- gynecocracies27
- hagiographies24
- handkerchiefs29
- haphazardries30
- harquebusiers29
- hematopoieses21
- hematopoiesis21
- hematopoietic24
- hepatectomies24
- herpetologies21
- heterophonies21
- heterospories18
- hierarchizing32
- hieroglyphics28
- historicities18
- homeothermies23
- homogeneities21
- hospitalities19
- housewiferies22
- huckleberries27
- hurriednesses18
- hydrographies25
- hyperacuities24
- hyperploidies25
- hypertrophied26
- hypertrophies25
- hysterotomies20
- ichthyologies25
- iconographies24
- illiquidities26
- immortalities20
- impassivities23
- impercipience29
- impetuosities20
- importunities21
- improprieties22
- impulsivities25
- incommodities24
- incongruities21
- inconstancies22
- inconvenience27
- inconveniency29
- incredulities20
- incuriosities18
- inefficiently27
- inexpediences29
- inexpediently29
- inexperienced29
- inexperiences28
- infantilities19
- infectivities24
- inferiorities17
- infertilities18
- informalities21
- infrequencies31
- inhabitancies23
- insalubrities19
- insincerities18
- instabilities18
- insufficiency30
- integralities17
- interiorities14
- internalities16
- intersocietal18
- intrepidities18
- inviabilities22
- ironmongeries20
- irrelevancies22
- irretrievable21
- irretrievably23
- isoantibodies18
- isotonicities17
- jabberwockies38
- japonaiseries26
- kinesiologies21
- laparoscopies23
- laryngologies22
- lichenologies23
- liebfraumilch30
- lieutenancies20
- lingonberries21
- lithographies23
- lithotripsies19
- liveabilities22
- longanimities21
- lycanthropies25
- macronutrient22
- magnanimities23
- mailabilities21
- malariologies20
- mammographies29
- manufactories24
- marginalities20
- martyrologies21
- masculinities22
- masticatories19
- materialities17
- meltabilities21
- meritocracies22
- meteorologies19
- methodologies22
- micronutrient22
- misanthropies22
- mischievously29
- miscibilities23
- misclassified24
- misclassifies23
- misidentified22
- misidentifies21
- monstrosities17
- moribundities22
- morphometries24
- multiemployer27
- muscularities22
- myrmecologies27
- mythographies27
- narratologies17
- nationalities16
- naturopathies20
- neckerchieves30
- neonatologies18
- nephrectomies25
- nephropathies24
- neurosciences22
- nonclassified23
- nondeliveries21
- nonesterified19
- nonidentities17
- nonmotilities19
- nonscientific25
- nonscientists19
- nonvalidities21
- notionalities16
- nympholepsies28
- objectivities32
- observatories20
- oneiromancies21
- onomatologies20
- openabilities21
- operabilities20
- opportunities21
- optionalities18
- oracularities18
- orientalizing27
- orientational16
- orienteerings17
- originalities17
- ornithologies19
- orthographies22
- osteoplasties17
- ototoxicities23
- ovariectomies23
- overachievers26
- overachieving29
- overamplified28
- overanxieties25
- overqualified32
- packabilities27
- paleobotanies21
- paleographies24
- palpabilities24
- paramountcies24
- parfocalities23
- partibilities20
- passementerie20