| unchangeable(adjective, resolute, obstinacy) |
| unregenerate(adjective, persistent, obstinate, insistent, dogged) |
| unshaken |
| viscose(adjective, sticky, viscous) |
| wayward(adjective, difficult, wild, awkward, persistent) |
| able-bodied(adjective, strong, sound, tough, fit) |
| active(adjective, strong, sound, tough, solid) |
| bloody-minded(adjective, persistent, obstinate, insistent, dogged) |
| bound and determined(expression, adjective, idiom, determined, vigorous) |
| brass-bound(adjective, determined, resolute, obstinate, uncompromising) |
| committed(adjective, resolute) |
| confirmed(adjective, persistent, obstinate, insistent, dogged) |
| definite |
| dogmatic(adjective, determined, fixed, stubborn, opinionated) |
| dynamic |
| fearless(adjective, strong, tough, vigorous, steady) |
| forceful(adjective, clear, strong, sound, tough) |
| froward(adjective, persistent, obstinate, insistent, dogged) |
| game(strong, tough, determined, bold, resolute) |
| good |