There are 399 words that start with 'sto'.
Note: These 399 words that start with 'sto' are found from the USA & Canada version of the tournament Scrabble word list.
Also see words start with stoc, stor, ston, stom, stop, stou, stoo, stol, stok, stot, stow, stod, stoi, stoa, stov, stog, stob, stos.
4-letter words start with 'sto' (5)