10 letters
- precentors17
- preceptors19
- preceptory21
- preciosity18
- precipices22
- precocious20
- precompute23
- preconcert20
- predictors17
- preemption20
- preemptors19
- preemptory21
- prehistory17
- premeiotic19
- premoisten17
- premycotic24
- preportion17
- preprocess19
- prerecords17
- prescriber19
- prescripts19
- preterites13
- pretermits16
- pretrimmed20
- prettifier16
- prettifies16
- priesthood16
- priestlier14
- princeship22
- printeries14
- priorities13
- priorships18
- procercoid20
- proclitics20
- procreates16
- procreator16
- procryptic24
- profiteers16
- projectors25
- promethium22
- promotions17
- pronephric22
- pronephroi19
- pronephros19
- proofrooms19
- propertied17
- properties16
- prophecies21
- prophesied19
- prophesier18
- prophesies18
- prophetess18
- propitiate16
- propitious17
- proportion17
- propraetor16
- propretors16
- proprietor16
- prosciutti17
- prosciutto17
- proscriber19
- prosectors16
- prosecutor17
- prospected20
- prospector19
- prosperity18
- prosthetic18
- prostitute14
- prostomium20
- protection17
- protective20
- protectors16
- protectory18
- protesters13
- protestors13
- protoderms17
- protostele14
- protostome16
- prototroph18
- prototypes18
- prototypic21
- protractor16
- protreptic19
- pyrometers18
- pyrometric21
- pyrophoric23
- pyrrhotite17
- reattempts16
- receptions17
- recharters15
- rechristen16
- recipients17
- recompiles20
- recomposed20
- recomposes19
- recomputes20
- recruiters14
- rectifiers16
- rectorates13
- rectorship18
- redistrict14
- reimported17
- reminiscer17
- remitments17
- reoccupies20
- repertoire13
- repetition14
- reposition14
- repository15
- reprinters14
- reproacher18
- reproaches18
- resmoothed16
- resorption14
- resorptive17
- respirator13
- restitched16
- restitches15
- restricted14
- retouchers16
- retractors13
- retrodicts14
- retrofires13
- retrospect16
- rheometers15
- rheostatic15
- rhinoceros16
- ricketiest17
- ricocheted19
- ripsnorter14
- rocketries17
- rockhopper25
- roisterers10
- rotameters13
- rotisserie10
- scepticism22
- schipperke25
- schoolroom19
- schooltime19
- scratchier18
- screechier18
- scrimpiest19
- scriptoria16
- scrootched19
- scrootches18
- seborrheic18
- semeiotics16
- semicircle20
- semitropic19
- septicemia19
- septicemic22
- seriocomic19
- servomotor17
- shipfitter18
- shrimpiest18
- skitterier14
- slipperier17
- smitheries15
- smoothbore18
- snippetier17
- sociometry18
- sophomores18
- sophomoric21
- sororities10
- spermaceti19
- spermicide20
- sphericity20
- spirochete18
- spirometer16
- spirometry18
- splotchier19
- sporophore18
- sporophyte20
- sporozoite22
- stenotherm16
- stenotopic17
- stepmother18
- stitchwort18
- storerooms13
- stretchers15
- stretchier15
- stroppiest16
- supermicro20
- suppertime20
- switcheroo18
- tachometer18
- telephotos16
- telescopic20
- teliospore14
- temerities13
- temporised17
- temporises16
- temporizer25
- temporizes25
- tenotomies14
- terrorised11
- terrorises10
- terrorisms13
- terrorists10
- terrorizes19