| Rating | Solver | Clue |
|---|---|---|
| ASSIDUOUS | Hard-working | |
| CYNICAL | Hard-bitten | |
| OBDURATE | Hard-hearted | |
| REACTIONARY | Die-hard | |
| DURABLE | Hard-wearing | |
| DIFFICULT | Hard | |
| INDUSTRIOUS | Hard-working | |
| SEVERE | Hard | |
| DEMANDING | Hard | |
| INTENSE | Hard-working | |
| DILIGENT | Hard-working | |
| DUROUS | Hard. | |
| FLINT-HEARTED | Hard-hearted. | |
| DENIM | Hard-wearing fabric | |
| ELBOW GREASE | Hard scrubbing | |
| ROCK | Hard confectionery | |
| EASY | Not hard | |
| SCRUBBING | Rubbing hard | |
| BANGS | Knocks hard | |
| TOILER | Hard worker | |
| SLAVE | Toil hard | |
| DOGGEDNESS | Hard work | |
| PUFF | Breathe hard | |
| JEANS | Hard-wearing trousers | |
| SLAVED | Toiled hard | |