There are 17 words that start with 'lack'.
| lack | lacks |
| lacked | lacker |
| lackey | lackers |
| lackeys | lacking |
| lackaday | lackered |
| lackeyed | lackering |
| lackeying | lackluster |
| lacklusters | lackadaisical |
| lackadaisically | |
Note: These 17 words that start with 'lack' are found from the USA & Canada version of the tournament Scrabble word list.