10 letters
- postimpact22
- postmaster16
- postpartum20
- postscript19
- potlatches19
- preachiest18
- preciosity18
- prehistory17
- premycotic24
- presbyopia21
- presbyopic24
- propensity19
- prophecies21
- propitiate16
- prosperity18
- prostatism16
- prosthetic18
- protamines17
- prototypes18
- prototypic21
- protreptic19
- psilophyte21
- psychiatry22
- psychopath25
- pyrometric21
- pyrrhotite17
- reappoints17
- rectorship18
- rheostatic15
- rheumatics19
- rhytidomes18
- saprophyte20
- scrappiest19
- semitropic19
- shipmaster18
- sociometry18
- sociopathy20
- somatotype18
- spaceports19
- spectators16
- spermaceti19
- sphericity20
- spirochete18
- spirometry18
- splotchier19
- sporophyte20
- starchiest15
- stationery13
- stepmother18
- stomachers18
- strathspey17
- stroppiest16
- supermacho22
- supraoptic20
- sympathies20
- sympathise20
- sympathize29
- sympatries18
- systematic18
- tachometer18
- taperstick20
- tautomeric17
- theocratic18
- therapists15
- thermistor15
- thermostat15
- thimerosal16
- throatiest12
- thymocytes22
- tightropes17
- tovariches19
- tracheitis15
- trichocyst20
- trichotomy20
- trichromat18
- tryptamine19
- tryptophan21
- tympanites19
- typescript21
- typographs22
- viscometry22
- vitrectomy22
- xerophytic27