10 letters
- onomastics17
- oratorical14
- organismal17
- ornamental16
- oscillator15
- osculation16
- osmolarity16
- ozonations21
- palmations18
- pantaloons16
- placations18
- planations16
- prolactins18
- promotions17
- pronations15
- pronominal19
- prostomial17
- rationales12
- relocation15
- rotational12
- sanatorium15
- sanctimony20
- santolinas13
- sarcosomal17
- scarlatina15
- scleromata17
- semantical18
- senatorial12
- senatorian12
- simoniacal18
- sinoatrial12
- sonication15
- talismanic18
- tamarillos15
- tarnations12
- tractional15
- trainloads13
- transsonic15
- trinomials15
- tyrannical18
- ultrasonic16
- unromantic19
- vocational19