There are 13 words that start with 'locks'.
| locks | lockset |
| locksets | lockstep |
| locksmith | locksteps |
| locksmiths | lockstitch |
| locksmithing | lockstitched |
| lockstitches | locksmithings |
| lockstitching | |
Note: These 13 words that start with 'locks' are found from the USA & Canada version of the tournament Scrabble word list.