There are 30 8-letter words that start with 'cop'.
Note: These 30 8-letter words that start with 'cop' are found from the USA & Canada version of the tournament Scrabble word list.
Also see words start with copr, copy, copa, copp, copu, cope, copi, copo, copl, cops, copt.
4-letter words start with 'cop' (3)