11 letters
- positronium19
- precessions18
- preclusions20
- prefocusing24
- premonition19
- premunition20
- prescinding22
- prestigious17
- prestissimo17
- princelings22
- proboscises20
- processions18
- professions18
- prognostics20
- progression17
- proinsulins18
- prominences22
- promiscuous22
- pronouncers20
- pronouncing23
- prosceniums22
- prosecuting21
- prosecution19
- prussianise16
- recognising20
- recognition18
- recombining24
- recompiling24
- recomposing23
- recomputing24
- redisposing18
- reemissions15
- refocussing21
- reminiscing21
- repositions15
- rescissions15
- responsions16
- resummoning22
- resumptions19
- reunionists14
- riotousness13
- roguishness17
- roominesses15
- ruinousness15
- scroungiest18
- scrutinises16
- scuppernong25
- seismograms19
- semitropics20
- sermonizing27
- serpiginous18
- somniferous19
- sphingosine20
- spoonerisms18
- sporogenous18
- sporogonies17
- sporogonium21
- springhouse20
- springiness18
- springtimes20
- stringiness15
- submersions19
- summarising21
- supermicros21
- superposing21
- supersonics19
- supertonics19
- supervising22
- supervision20
- suppressing21
- suppression19
- suspensions17
- suspicioned20
- temporising20
- tumorigenic21
- uncommonest23
- undermining21
- uniformness20
- uninspiring20
- unloosening18
- unpromising22
- unreasoning17
- unresisting16
- viciousness20