There are 465 14-letter words that start with 's'.
Note: These 465 14-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)