| Rating | Solver | Clue |
|---|---|---|
| OBDURATE | Hard-hearted | |
| FLINT-HEARTED | Hard-hearted. | |
| MEAN | Hard hearted | |
| STONY | Hard hearted | |
| ADAMANT | Hard hearted | |
| EARTHEN-HEARTED | Hard-hearted; sordid; gross. | |
| STONE-HEARTED | Hard-hearted; cruel; pitiless; unfeeling. | |
| UNFEELING | Without kind feelings; cruel; hard-hearted. | |
| COLD-BLOODED | Deficient in sensibility or feeling; hard-hearted. | |
| IRON-HEARTED | Hard-hearted; unfeeling; cruel; as, an iron-hearted master. | |
| PITILESS | Destitute of pity; hard-hearted; merciless; as, a pitilessmaster; pitiless elements. | |
| CRUEL | Disposed to give pain to others; willing or pleased to hurt, torment, or afflict; destitute of sympathetic kindness and pity; savage; inhuman; hard-hearted; merciless. | |