There are 6,886 words that start with 're'.
Note: These 6,886 words that start with 're' are found from the USA & Canada version of the tournament Scrabble word list.
Also see words start with res, rec, rep, rea, ret, red, ref, rev, rem, rei, ree, rel, reg, ren, reb, reh, rew, reo, rer, rej, req, reu, rek, rez, rex, rey.
3-letter words start with 're' (13)