4 letters
- snot5
- snow8
- soak8
- soap7
- soar4
- soda5
- sofa7
- soil5
- soja13
- sola5
- soli5
- solo5
- soma7
- sone5
- song7
- sons5
- sook8
- soon5
- soot4
- soph9
- sops7
- sora4
- sori4
- sorn5
- soup8
- sown8
- soya6
- spae7
- spam10
- span8
- spar7
- spas7
- spat7
- spay9
- spaz16
- spic10
- spik11
- spin8
- spit7
- spiv11
- spot7
- spun9
- stoa4
- stop7
- swan8
- swap10
- swop10
- tain5
- tans5
- taos4
- tapa7
- taps7
- tins5
- tips7
- tons5
- toon5
- topi7
- tops7
- unai6
- upas8
- upon9
- vain9
- vans9
- vasa8
- vina9
- vino9
- visa8
- wain8
- wans8
- waps10
- wasp10
- wino8
- wins8
- wisp10
- wons8
- woos7
- wops10
- yaps9
- yins7
- yips9
- yoni7
- zaps16
- zins14
- zips16
- zoon14
- zoos13