13 letters
- instabilities18
- instantaneity18
- institutional17
- intangibility23
- integrability22
- integralities17
- interdigitate17
- interiorities14
- interknitting22
- intermittence21
- intermittency23
- internalities16
- interposition18
- intrepidities18
- intuitionisms19
- intuitionists16
- intuitiveness20
- invariability24
- inviabilities22
- invincibility28
- inviolability25
- invitationals20
- irrationality17
- irritableness18
- isotonicities17
- italicization27
- jitterbugging33
- jitterinesses23
- juxtaposition34
- kittenishness21
- latitudinally21
- legitimations20
- legitimatized29
- legitimatizes28
- limitednesses19
- limitlessness19
- literalnesses16
- lithification23
- lithographers23
- lithographies23
- lithographing26
- lithotripsies19
- lithotripters19
- lithotriptors19
- litigiousness18
- liveabilities22
- locksmithings29
- lockstitching29
- longanimities21
- lymphadenitis26
- lysolecithins23
- machinability28
- magnanimities23
- mailabilities21
- majoritarians26
- maladroitness19
- malnutritions20
- manageability25
- marginalities20
- marketability26
- masculinities22
- mastoiditides18
- materialities17
- measurability23
- mediterranean19
- megalopolitan24
- meltabilities21
- mensurability24
- meritocracies22
- meritoriously20
- metastability22
- meteoriticist19
- metropolitans21
- microcircuits26
- microhabitats24
- microporosity24
- microswitches27
- microtonality23
- miscibilities23
- mispositioned21
- mitochondrial24
- mitochondrion24
- modifiability26
- monstrosities17
- monumentality25
- moribundities22
- multihospital24
- multipolarity24
- multitalented21
- multitaskings25
- multiterminal23
- multitracking28
- multitrillion21
- multitudinous22
- multivitamins26
- muscularities22
- myocarditises22
- nationalities16
- necessitarian18
- necessitating20
- necessitation18
- necessitously21
- negligibility25
- negotiability22
- neurotoxicity27
- nitrification21
- nitrobenzenes28
- nitroglycerin23
- nitromethanes20
- nitroparaffin24
- nonaccredited23
- nonadditivity23
- nonarchitects23
- noncapitalist22
- noncommitment28
- noncompetitor24
- nonconformity27
- noncreativity24
- nondeposition20
- nonexploitive30
- nonforfeiture22
- nonhereditary20
- nonidentities17
- nonirritating18
- nonmotilities19
- nonnutritious18
- nonpolitician23
- nonuniformity25
- nonuniversity23
- nonvalidities21
- notionalities16
- nutritionally20
- nutritionists16
- objectivities32
- obliterations18
- observability26
- obtainability23
- openabilities21
- operabilities20
- opportunities21
- oppositionist20
- optionalities18
- oracularities18
- originalities17
- ornithischian22
- ornithologies19
- ornithologist19
- orthogonality21
- osteomyelitis19
- ototoxicities23
- outglittering20
- outpoliticked26
- overambitious24
- overcommitted27
- overdiversity24
- overexploited29
- overingenuity24
- overintensity21
- overnutrition20
- oversensitive22
- overstability23
- overwithholds26
- ovipositional22
- packabilities27
- palpabilities24
- paranormality23
- parasexuality27
- parasitically23
- parasiticidal21
- parasiticides20
- parasitologic22
- parfocalities23
- partibilities20
- particularity23
- partitionists17
- patentability23
- pathogenicity26
- peculiarities21
- penetrability23
- penitentially22
- pentobarbital24
- perdurability24
- periodicities20
- periostitises16
- perishability24
- peritonitises17
- personalities18
- perspicuities23
- pertinacities20
- pharyngitides24
- phenobarbital26
- photopositive25
- phototoxicity30
- physicalities24
- phytotoxicity32
- piteousnesses18
- pitifulnesses22
- placabilities24
- platitudinize29
- platitudinous21