9 letters
- sprouting16
- stomachic20
- stonecrop16
- strontium14
- stuccoing19
- subarctic19
- subatomic19
- submicron20
- subtropic19
- succinate17
- succoring19
- suctional15
- suctorial14
- suctorian14
- summation17
- supinator14
- sympatric20
- tandooris11
- taxonomic23
- tenacious14
- timocracy20
- timpanums20
- tonsorial11
- toponymic21
- torsional11
- tractions13
- transonic14
- trapuntos14
- trochaics17
- troopials13
- troponins14
- troupials14
- truancies14
- turncoats14
- unciforms20
- upcasting19
- uprootals14
- uprooting16
- upsoaring16
- upstaring16
- urticants14
- vasotocin17
- vocations17
- voracious17