9 letters
- nutations12
- nutrition12
- oblations14
- obscurant17
- obtaining16
- obtrusion14
- obturator13
- obviation17
- octillion15
- ocularist14
- olecranon15
- olfaction17
- onanistic14
- orbicular17
- otolithic15
- outacting16
- outercoat13
- outlearnt12
- outlining15
- outracing16
- outrating13
- ovulation16
- partition13
- patriotic15
- pictorial16
- plication17
- plutocrat17
- plutonian16
- politburo17
- probation16
- prolactin17
- pronation14
- punctilio18
- quotation20
- ranunculi17
- rationing13
- ratooning13
- reliction14
- reluctant15
- ritualist11
- rotations10
- ruinating14
- ruination12
- runcinate15
- siltation11
- situation11
- solicitor13
- sortition10
- stirabout13
- striation10
- sublation15
- suctional15
- suctorial14
- suctorian14
- tabouring16
- tabulator14
- tailoring13
- tarnation11
- titration10
- tonsorial11
- torsional11
- touristic13
- tractions13
- tradition11
- transonic14
- tretinoin11
- triathlon13
- triatomic15
- tribulate14
- tribunals15
- tribunate14
- trichinal16
- triclinia14
- tricotine13
- triennial12
- trilobate13
- trilobite13
- trinomial14
- triticale13
- troubling17
- trouncing17
- truanting14
- tuitional12
- turbinals15
- turbinate14
- turnabout15
- turncoats14
- turntable15
- tutorials11
- ultracool15
- ultrathin14
- unbolting18
- unbracing20
- uncertain15
- unclarity17
- uncoating17
- uncoiling18
- uncrating17
- unilinear13
- unitarian12
- unitarily14
- unrooting14
- uraninite12
- urinating14
- urination12
- urticants14
- vibration17
- violation15