There are 1,146 12-letter words that start with 's'.
Note: These 1,146 12-letter words that start with 's' are found from the USA & Canada version of the tournament Scrabble word list.
Also see words start with su, st, se, sp, sa, sh, sc, so, si, sl, sy, sn, sw, sk, sm, sq, sv, sf, sr, sj, sg.
2-letter words start with 's' (3)