| Rating | Solver | Clue |
|---|---|---|
| FIRM | Harden | |
| SET | Harden | |
| INURE | Harden | |
| BRAZE | To harden. | |
| OBDURE | To harden. | |
| EMBRAWN | To harden. | |
| HARDENED | Of Harden | |
| OBDURATE | To harden. | |
| HARDENING | Of Harden | |
| OSSIFY | Harden into ice | |
| FREEZE | Harden into ice | |
| BAKE | To harden by cold. | |
| ENHARDEN | To harden; to embolden. | |
| OCCRUSTATE | To incrust; to harden. | |
| HARD | To harden; to make hard. | |
| SOLIDIFY | To become solid; to harden. | |
| KERN | To harden, as corn in ripening. | |
| STONE | To make like stone; to harden. | |
| BESMOKE | To harden or dry in smoke. | |
| EMMARBLE | To turn to marble; to harden. | |
| PLANK | To harden, as hat bodies, by felting. | |
| ENDURE | To harden; to toughen; to make hardy. | |
| ENMARBLE | To make hard as marble; to harden. | |
| OBFIRMATE | To make firm; to harden in resolution. | |
| OVERHARDEN | To harden too much; to make too hard. | |