11 letters
- spermagonia20
- splattering18
- splintering19
- stalagmitic20
- stalemating18
- straitening15
- strategical17
- tantalising16
- temporising20
- terminating18
- termination16
- testimonial16
- tramontanes16
- trampolines19
- transacting18
- transaction16
- transalpine17
- transecting18
- transection16
- translating16
- translation14
- translocate16
- trapnesting18
- trepanation16
- trigeminals18
- triplicates18