There are 12 8-letter words that start with 'blac'.
| blackboy | blackcap | blackens | blackest |
| blackfin | blackfly | blackgum | blacking |
| blackish | blackleg | blackout | blacktop |
Note: These 12 8-letter words that start with 'blac' are found from the USA & Canada version of the tournament Scrabble word list.