10 letters
- serialisms14
- serialists11
- shamanists16
- smarminess17
- smartasses13
- smearcases16
- smiercases16
- sparsities13
- spearmints17
- staircases13
- stannaries12
- steaminess14
- stickiness18
- storminess14
- strabismic19
- straitness11
- stramashes15
- stramonies14
- streamings16
- strictness14
- sustainers12
- syncretism19
- talismanic18
- tanistries11
- tarantisms14
- tarriances14
- tearstains11
- thiaminase16
- trashiness13
- trichiases15
- trickiness18
- trimnesses14
- vicariants18
- vicariates17