There are 15 words that start with 'sack'.
| sack | sacks | sacked |
| sacker | sackbut | sackers |
| sackful | sacking | sackbuts |
| sackfuls | sackings | sacklike |
| sacksful | sackcloth | sackcloths |
Note: These 15 words that start with 'sack' are found from the USA & Canada version of the tournament Scrabble word list.