11 letters
- postcranial19
- practically24
- prosaically21
- psychiatric24
- pyracanthas22
- pyroclastic23
- racialistic18
- radiational14
- rapscallion20
- rationalise13
- rationalism16
- rationalist13
- rationality15
- rhinoplasty20
- sacculation20
- sacroiliacs18
- saltatorial13
- salvational18
- sanitarians13
- sartorially15
- satanically19
- satirically18
- saturnalian15
- scarlatinal17
- scarlatinas16
- scholiastic20
- scintillant18
- scorchingly25
- sectionally19
- somatically21
- sycophantic25
- syndication19
- syntactical21
- tachycardia22
- technically24
- technicians21
- thiouracils18
- thrasonical18
- titanically19
- torsionally16
- transaction16
- translation14
- triadically19
- triennially17
- trillionths16
- trisyllabic21
- trophically23
- unchristian19
- unscholarly22
- vaccination23
- vaccinators22
- vacillation21
- vacillators20
- variational17
- volcanicity25
- zoantharian24