9 letter words:
sissyness12,
7 letter words:
synesis10,
6 letter words:
sisses6,
5 letter words:
sissy8,
snyes8,
sines5,
sises5,
4 letter words:
snye7,
syne7,
yens7,
yins7,
ness4,
seis4,
sine4,
sins4,
3 letter words:
syn6,
yen6,
yes6,
yin6,
ens3,
ess3,
ins3,
sei3,
sen3,
sin3,
sis3,
2 letter words:
ye5,
en2,
es2,
in2,
is2,
ne2,
si2,