9 letters
- optimises15
- optimists15
- orpiments16
- paintiest13
- passerine13
- patentees13
- patienter13
- patissier12
- pediments17
- pelerines14
- penetrate13
- penitents14
- perimeter15
- peristome15
- perkiness17
- permeases15
- permeates15
- permitted16
- permittee15
- permitter15
- persisted13
- persister12
- pertinent14
- pessimist15
- pesterers12
- pestering15
- pestilent14
- petitions13
- petrifies15
- pettiness13
- petuntses14
- phrensies15
- pietistic15
- pilseners14
- pimientos16
- pinasters13
- pinsetter13
- pinstripe16
- piosities12
- piperines16
- pipestems18
- pistareen13
- pithiness15
- poetisers12
- pointiest13
- potteries12
- precisest15
- preexists19
- prelimits16
- premieres15
- premising18
- premisses15
- prentices16
- prerinses13
- prescient16
- presences16
- presented14
- presentee13
- presenter13
- president14
- prestiges14
- pretastes12
- pretences16
- pretenses13
- preterite12
- preterits12
- pretermit15
- pretested13
- prettiest12
- preunites14
- priestess12
- priesting15
- primeness16
- primitive19
- princesse16
- printless14
- prissiest12
- pristanes13
- privities16
- promisees15
- pteridine14
- recentest13
- recipient16
- reediness11
- reemitted13
- reenlists11
- reentries10
- regiments15
- reignites12
- reimposes15
- reincites13
- reinserts10
- reinspect16
- reinspire13
- reinstate10
- reinvests14
- reinvites14
- remeeting15
- reminisce16
- remission13
- remitment16
- remittent13
- remitters12
- remitting15
- remoisten13
- repenters13
- repetends14
- represent13
- reserpine13
- resetters9
- resetting12
- resettles10
- residents11
- resilient11
- resinates10
- resistant10
- resisting12
- resistive13
- resitting12
- respiting15
- retempers15
- retentive14
- retesting12
- retinenes11
- retinites10
- retinitis10
- revetment17
- rimesters12
- ritziness19
- satieties9
- sceneries13
- scientism16
- scientist13
- scimiters15
- secretest12
- secretins13
- sediments14
- seedtimes13
- seemliest13
- selenites11
- semesters12
- semierect15
- semisweet15
- semitists12
- semitones13
- sensitise10
- sensitive14
- sensitize19
- sentients11
- sentiment14
- septettes12
- serotines10
- serviette13
- sestertia9
- seventies14
- sheeniest12
- shipments18
- shirtiest11
- siderites10
- silentest11
- simperers15
- simpering18
- sincerest13
- sirventes14
- sistering12
- skimpiest19
- sleepiest13
- sleetiest10
- slimpsier16
- smeariest12
- smectites15
- smirkiest16
- sneeziest19
- snippiest16
- sparteine13
- spearmint16
- specimens19
- speediest13
- speedster13
- speerings15
- spermines16
- spheriest14
- spiceries15
- spinneret14
- spinsters13
- spiriting15
- spiritism15
- spiritist12
- spitfires15
- spleenier14
- splinters14
- splitters13
- sportiest12
- sportsmen16
- sprinters13
- statesmen13
- steamiest12
- stearines10
- steeliest10
- steepness13