10 letters
- porcelains18
- positional15
- potboilers17
- praenomina18
- pratincole18
- prenotions15
- probations17
- procambial23
- prolactins18
- prolamines18
- promotable20
- pronations15
- pronominal19
- prostomial17
- protamines17
- protonemal18
- rampancies20
- rapacities16
- rationales12
- reimplants18
- relictions15
- relocation15
- reposition14
- reptilians15
- sailboater14
- scleromata17
- semantical18
- seminarian15
- semitropic19
- senatorial12
- senatorian12
- separation14
- sibilation15
- simoniacal18
- sincipital18
- sinoatrial12
- sonication15
- speciation17
- spermatial17
- spoliation15
- tablespoon18
- talismanic18
- trampoline18
- triennials13
- trinomials15