15 letters
- photoexcitation31
- phototactically30
- polycrystalline29
- postadolescents24
- postapocalyptic33
- postconsonantal25
- precipitantness26
- precipitateness25
- preestablishing27
- preimplantation27
- presentableness24
- prestidigitator21
- profitabilities25
- proletarianised21
- proletarianises20
- proletarianized30
- proletarianizes29
- promotabilities25
- prostatectomies24
- reaccreditation23
- reafforestation22
- recontaminating26
- recontamination24
- recrystallizing34
- reestablishment25
- rehabilitations22
- rehospitalizing33
- reimplantations24
- reinstallations19
- repeatabilities22
- representations20
- representatives23
- resectabilities22
- respectableness26
- revitalizations30
- rudimentariness22
- sacramentalisms26
- sacramentalists23
- semicrystalline26
- semidocumentary29
- sentimentalised22
- sentimentalises21
- sentimentalisms24
- sentimentalists21
- sentimentalized31
- sentimentalizes30
- spontaneousness22
- stadtholderates20
- stadtholdership25
- standardization28
- standoffishness26
- statelessnesses17
- stereotaxically29
- subcontraoctave30
- submetacentrics29
- subproletariats23
- substantialness22
- substantiations21
- substantiveness25
- substantivizing36
- superspectacles29
- supplementation28
- tachyarrhythmia31
- talkativenesses25
- tarsometatarsus19
- tastelessnesses17
- tatterdemalions21
- telangiectasias22
- temperamentally29
- tentativenesses21
- thermostability26
- totalitarianism20
- totalitarianize26
- tractablenesses23
- translatability23
- transplantation22
- transportations20
- transubstantial22
- trisoctahedrons22
- ultramontanisms25
- unacceptability32
- uncertainnesses22
- uncomplimentary33
- uncopyrightable33
- understandingly26
- understatements22
- uniformitarians24
- unparliamentary27
- unsubstantially26
- unsubstantiated23
- unsuitabilities22
- utilitarianisms21
- vasodilatations22
- veritablenesses24
- voluntarinesses23
- warrantableness24
- weltanschauungs30