There are 4 5-letter words that start with 'cau'.
cauld | caulk | cauls | cause | |
Note: These 4 5-letter words that start with 'cau' are found from the USA & Canada version of the tournament Scrabble word list.
Also see words start with caus, caul, caut, caud, cauc, caug.
4-letter words start with 'cau' (1)