10 letters
- supinators15
- supraoptic20
- suspicions18
- syncarpous20
- tanistries11
- timpanists17
- tinctorial15
- titrations11
- tonicities14
- tracksuits18
- traditions12
- transcript17
- transistor11
- transition12
- transports14
- transsonic15
- trichiasis15
- trichinous17
- tricotines14
- tricuspids18
- trisection14
- triunities12
- truncation16
- tutorships16
- ultraistic15
- ultrasonic16
- unactorish17
- unartistic15
- upstarting17
- urbanistic18
- urinations13
- urticating17
- urtication15
- usurpation16
- utopianism18
- visitation15
- vitiations15
- vorticists17