11 letters
- pentaploidy22
- pentarchies20
- pentathlete18
- pentathlons19
- pentavalent21
- pentazocine28
- percentages20
- perinatally19
- periodontal17
- peristalses15
- peristalsis15
- peristaltic18
- permutation19
- phantasmata20
- phantasying22
- phonotactic23
- phosphatase21
- photostated17
- photostatic19
- phototactic22
- phyllotaxes27
- phyllotaxis27
- pitapatting20
- pituitaries15
- planetarium20
- plantations17
- polycrystal23
- portabellas19
- portabellos19
- portability20
- portamentos18
- postmarital18
- postnatally19
- postorbital18
- potableness19
- precipitant21
- precipitate20
- predictable22
- predictably24
- prefrontals19
- premeditate18
- prepubertal22
- presentable19
- presentably21
- prestamping23
- preventable23
- projectable30
- proletarian16
- proletariat15
- proprietary19
- prostatisms17
- prostatitis14
- protagonist17
- protectants18
- protestants15
- protonemata18
- protonotary17
- provitamins22
- psittacines18
- psittacoses17
- psittacosis17
- psittacotic20
- punctations20
- puritanical20
- puritanisms19
- qualitative26
- quantitated23
- quantitates22
- quotability27
- rallentando16
- rataplanned18
- ratatouille14
- razzamatazz50
- reattaching19
- reattacking21
- reattaining15
- recantation16
- receptacles21
- recitalists15
- recitations15
- recitatives18
- recitativos18
- recommittal21
- recontacted19
- rectangular19
- redoubtable20
- redoubtably22
- reestablish17
- reflectance22
- refutations16
- regimentals18
- regrettable17
- regrettably19
- regurgitate16
- reinstalled15
- reinstating15
- relocatable19
- reluctances20
- reluctantly20
- reluctating19
- reluctation17
- remittances18
- rentability18
- reobtaining18
- reorientate12
- repentances19
- repentantly19
- reputations16
- resistances15
- respectable21
- respectably23
- restabilize24
- restartable15
- restatement15
- restaurants13
- resultantly17
- resuscitate15
- retailoring15
- retaliating15
- retaliation13
- retaliative16
- retaliatory14
- retardation13
- retargeting16
- retractable18
- retreatants12
- revegetated18
- revegetates17
- revitalised17
- revitalises16
- revitalized26
- revitalizes25
- rijsttafels24
- ritardandos14
- rodomontade17
- rotaviruses16
- roundtables18
- roustabouts16
- rudimentary19
- sacahuistas17
- sacramental19
- saltarellos14
- saltatorial13
- salutations14
- sanitarians13
- sanitariums16
- sanitations13
- satanically19
- scissortail15
- secretarial15
- secretariat14
- secretaries14
- sedimentary18
- segmentally21
- semipostals18
- sentimental17
- sinfonietta16
- smokestacks25
- solicitants16
- soundstages16
- spanakopita22
- spanokopita22
- spectacular22
- spirochetal20
- spontaneity18
- spontaneous17
- springtails18
- stabilities15
- stabilizers24
- stabilizing27
- stablemates18
- stablishing20
- stadtholder16
- stagecrafts19
- stagestruck21
- stagflation18
- staggerbush21
- staginesses14
- stagnancies18
- stagnations15
- staidnesses13
- stainlesses13
- stainlessly16
- stakeholder19
- stalactites15
- stalactitic18
- stalagmites17
- stalagmitic20
- stalemating18
- stalenesses13
- stallholder17
- staminodium20
- stanchioned19
- standardise14
- standardize23
- standoffish21
- standpatter16
- standpoints17
- standstills15
- staphylinid21