10 letters
- phonograms21
- phonograph23
- phonolites17
- phonologic22
- phosphates20
- phosphatic23
- phosphenes21
- phosphides21
- phosphines21
- phosphites20
- phosphores20
- phosphoric23
- phosphorus21
- phosphoryl23
- photically22
- photocells20
- photodiode17
- photoflash21
- photoflood20
- photogenic21
- photograms20
- photograph22
- photolyses18
- photolysis18
- photolytic21
- photolyzed28
- photolyzes27
- photomasks22
- photometer18
- photometry20
- photomural20
- photophase20
- photophore20
- photoplays21
- photostats15
- phototaxes22
- phototaxis22
- phototoxic25
- phototubes19
- phrenology21
- phrensying21
- phthisical21
- phylactery23
- phylaxises25
- phylesises18
- phyllaries19
- phyllodium24
- phyllotaxy28
- phylloxera26
- physically24
- physicians21
- physicists20
- physicking27
- physiology22
- phytotoxic27
- pictograph23
- podophylli23
- polygraphs23
- polymorphs24
- polyphagia23
- polyphasic24
- polyphenol23
- polyphones22
- polyphonic25
- porphyrias20
- porphyries20
- porphyrins21
- pronephric22
- pronephroi19
- pronephros19
- prophecies21
- prophesied19
- prophesier18
- prophesies18
- prophetess18
- prototroph18
- psephology23
- psilophyte21
- pyrophoric23
- radiograph18
- radiophone17
- radiophoto16
- reemphases18
- reemphasis18
- renography20
- rephrasing18
- sapphirine19
- saprophyte20
- sarcophagi20
- saxophones23
- saxophonic26
- scrapheaps21
- scyphozoan30
- semaphored19
- semaphores18
- serigraphs17
- serigraphy19
- shepherded19
- sonography20
- sophomores18
- sophomoric21
- sousaphone17
- sphalerite16
- sphenodons18
- sphenodont18
- sphenoidal18
- sphenopsid20
- sphericity20
- spheroidal17
- spherulite17
- sphincters19
- sphinxlike28
- sphygmuses23
- sporophore18
- sporophyll22
- sporophyte20
- straphangs18
- sulphating20
- sulphuring21
- sulphurise18
- sulphurous19
- sycophancy26
- sycophants21
- symphonies21
- symphonist21
- symphyseal23
- symphysial23
- synalephas19
- synaloepha19
- syphilises18
- syphilitic21
- taphonomic22
- telegraphs18
- telegraphy20
- telephoned18
- telephoner17
- telephones17
- telephonic20
- telephotos16
- telophases16
- telphering19
- theophanic21
- thiophenes18
- tocopherol19
- tomography22
- topography22
- toxaphenes23
- trephining19
- triglyphic23
- trigraphic20
- trimorphic21
- triphthong20
- triumphant20
- triumphing22
- tryptophan21
- turophiles17
- typhlosole19
- typographs22
- typography24
- unemphatic23
- unsphering20
- uphoarding20
- upholsters17
- upholstery19
- venography24
- vibraphone23
- videophile21
- videophone21
- wirephotos18
- xenophiles24
- xenophobes26
- xenophobia26
- xenophobic29
- xerography26
- xerophytes24
- xerophytic27
- xylographs27
- xylography29
- xylophones26
- zigamorphs29
- zoomorphic30
- zoophilies25
- zoophilous26
- zygomorphy33