10 letters
- subminimal22
- submission18
- submittals18
- submucosal22
- suboptimal21
- subsection18
- subsoiling18
- substation15
- subtilisin16
- suctorians15
- summations18
- summonable22
- talismanic18
- talmudisms19
- thumbnails21
- tribalisms17
- trinomials15
- ultimacies18
- ultrasonic16
- umbilicals22
- umbilicate21
- unsociable19
- unsociably21
- urbanistic18
- utopianism18
- vasculitis19
- volcanisms22
- vulcanisms23