There are 15 words that start with 'shac'.
| shack | shacko | shacks |
| shacked | shackle | shackos |
| shacking | shackled | shackler |
| shackles | shackoes | shacklers |
| shackling | shacklebone | shacklebones |
Note: These 15 words that start with 'shac' are found from the USA & Canada version of the tournament Scrabble word list.