There are 2 4-letter words that start with 'sul'.
sulk | sulu | |||
Note: These 2 4-letter words that start with 'sul' are found from the USA & Canada version of the tournament Scrabble word list.
Also see words start with sulf, sulp, sult, sulk, sull, sulc, suld, sulu.
4-letter words start with 'sul' (2)