11 letters
- semaphoring22
- semiotician18
- sempiternal19
- sentimental17
- sentineling17
- septicemias20
- shoplifting23
- signalments19
- significant21
- sillimanite17
- smoothening20
- socialising18
- socialities15
- socializing27
- solacements19
- solemnities16
- solemnizing28
- sophistical20
- spaceflight25
- spaghettini19
- spancelling23
- specialties18
- speciations18
- speculating22
- speculation20
- sphingosine20
- spiculation20
- spinachlike25
- spirochaete19
- spirochetal20
- splenectomy24
- splintering19
- stanchioned19
- steelmaking22
- stencilling20
- stenohaline16
- stockpiling25
- stringpiece20
- syncopating23
- tanglements19
- taphonomies20
- technicians21
- technophile23
- teemingness18
- telecasting18
- telegraphic22
- teleonomies16
- telepathies17
- telephoners18
- telephonies18
- telephoning21
- telephonist18
- telescoping21
- temperances21
- temporising20
- testimonial16
- theologians17
- theophanies19
- thermionics20
- thermocline21
- thermopiles20
- thickenings24
- thiopentals18
- tiemannites16
- timekeeping24
- timepleaser18
- tinsmithing20
- traineeship17
- trampolines19
- trigeminals18
- unanimities17
- uncongenial21
- ungainliest17
- venesection20
- vigilantism22
- wainscoting21