There are 30 7-letter words that start with 'chu'.
Note: These 30 7-letter words that start with 'chu' are found from the USA & Canada version of the tournament Scrabble word list.
Also see words start with chur, chuc, chum, chun, chut, chuf, chub, chug, chuk, chud, chup.
4-letter words start with 'chu' (3)