| Rating | Solver | Clue |
|---|---|---|
| STUBBORN | Obdurate | |
| OBSTINATE | Obdurate | |
| OBDURED | Obdurate; hard. | |
| INDURATE | Without sensibility; unfeeling; obdurate. | |
| TILL | A kind of coarse, obdurate land. | |
| PETRIFY | Fig.: To become stony, callous, or obdurate. | |
| UNPRAYABLE | Not to be influenced or moved by prayers; obdurate. | |
| STEEL | To make hard or strong; hence, to make insensible or obdurate. | |
| SOFTEN | To become soft or softened, or less rude, harsh, severe, or obdurate. | |
| OBDURACY | The duality or state of being obdurate; invincible hardness of heart; obstinacy. | |
| ROCKY | Fig.: Not easily impressed or affected; hard; unfeeling; obdurate; as, a rocky bosom. | |
| HARDENED | Made hard, or compact; made unfeeling or callous; made obstinate or obdurate; confirmed in error or vice. | |
| STONY | Inflexible; cruel; unrelenting; pitiless; obdurate; perverse; cold; morally hard; appearing as if petrified; as, a stony heart; a stony gaze. | |
| HARD | Difficult to please or influence; stern; unyielding; obdurate; unsympathetic; unfeeling; cruel; as, a hard master; a hard heart; hard words; a hard character. | |