| real(hard, sound, realistic) |
| reasonable(adjective, hard, sound, sensible, practical) |
| sane(adjective, hard, sound, reasonable, sensible) |
| self-opinionated(adjective, determined, resolute, uncompromising, unshakeable) |
| severe(adjective, strong, hard, tough, harsh) |
| solid(adjective, firm, inflexible, obstinate, stubborn) |
| sound(hard, realistic) |
| steadfast(tough, firm, determined, resolute, obstinate) |
| straight-thinking(rational, straightforward, down-to-earth) |
| unidealistic(adjective, hard, sound, reasonable, sensible) |
| unregenerate |
| unshakable(tough, firm, determined, resolute, obstinate) |
| unwavering(adjective, determined, resolute, obstinate, uncompromising) |
| against the grain(expression, idiom) |
| astringent(adjective, strong, hard, tough, severe) |
| austere(adjective, strong, hard, tough, severe) |
| authoritarian(adjective, strong, hard, tough, severe) |
| balking |
| bitter(adjective, strong, hard, tough, severe) |
| bulldogged |