11 letters
- romanticism21
- romanticist18
- sacramental19
- salinometer16
- sarcolemmal22
- sarcolemmas21
- scopolamine22
- secretarial15
- secretariat14
- seminatural17
- sempiternal19
- sentimental17
- separations15
- septentrion16
- solacements19
- speculation20
- spermacetis20
- spermagonia20
- spermatheca22
- spirochaete19
- spirochetal20
- splattering18
- splenectomy24
- stalemating18
- startlement16
- stereotaxic21
- stereotypic19
- straitlaced16
- strategical17
- streamlined17
- streamliner16
- streamlines16
- streetlamps18
- summational20
- symmetrical23
- symptomatic25
- tabernacles19
- tachometers19
- tantalizers22
- tautomerism18
- tearstained13
- teetotalism15
- telecasting18
- telephonist18
- teleporting18
- telescoping21
- telocentric19
- temperament21
- temperances21
- temporality20
- temporalize27
- temporaries17
- temptations18
- tensiometer15
- tensiometry17
- teratogenic17
- terminators15
- terneplates16
- testimonial16
- tetracaines15
- tetralogies14
- tetraploids16
- tetrasporic17
- theatricals17
- theorematic19
- theoretical17
- thermocline21
- thermopiles20
- thiopentals18
- thrasonical18
- timepleaser18
- tolerations13
- tonometries15
- tourmalines17
- trabeations15
- trajections24
- tramontanes16
- trampoliner19
- trampolines19
- transaction16
- transalpine17
- transection16
- translation14
- translative17
- translocate16
- transmittal16
- transpierce18
- transportee15
- treasonable16
- trepanation16
- treponemata18
- triacetates14
- triceratops17
- tricolettes15
- triplicates18
- tryptamines20
- ulcerations17
- vacationers19
- ventilators17
- watermelons19
- wentletraps19