There are 28 8-letter words that start with 'bull'.
Note: These 28 8-letter words that start with 'bull' are found from the USA & Canada version of the tournament Scrabble word list.
Also see words start with bulld, bulli, bulle, bullf, bulls, bully, bullh, bullb, bullw, bulla, bulln, bullo, bullp, bullr, bullm, bullt.
5-letter words start with 'bull' (3)