| dogged(adjective, mean, hard, determined, fixed) |
| motionless(adjective, strong, secure, substantial, fixed) |
| set in stone(expression, adjective, idiom, mean, hard) |
| solid(adjective, strong, secure, firm, steady) |
| staunch(adjective, set, strong, hard, firm) |
| pat(adjective, difficult, wild, determined, usual) |
| tenacious(adjective, strong, secure, firm, solid) |
| persistent(adjective, determined, stable, fixed, resolute) |
| resolved(adjective, determined, usual, fixed, resolute) |
| unmoved(adjective, calm, cool, firm, determined) |
| unswayable(adjective, hard, determined, resolute, obstinate) |
| business-minded |
| hanging tough(expression, adjective, mean, hard, determined) |
| headstrong(adjective, tough, determined, resolute, stubborn) |
| impassive(adjective, cool, secure, steady, detached) |
| implacable(adjective, mean, strong, hard, tough) |
| pigheaded(adjective, mean, hard, determined, usual) |
| quiescent(adjective, still, steady, stable, fixed) |
| resistant(adjective, firm, determined, resolute, obstinate) |
| settled(adjective, strong, secure, firm, solid) |