9 letters
- serotinal11
- serotonin11
- solitaire10
- steroidal11
- tailender12
- tailoring13
- tandooris11
- tensional12
- toenailed12
- tolidines12
- toluidine13
- tonsorial11
- tornadoes11
- torsional11
- tradition11
- trailside11
- trainload12
- treadling14
- tretinoin11
- triennial12
- trilinear11
- trindling15
- trinomial14
- underlain14
- unilinear13
- untrained13
- uraninite12
- uredinial13
- urination12
- vernation15
- violation15
- vitrioled15