| untamable |
| valorous(adjective, strong, tough, determined, vigorous) |
| wayward(difficult, wild, awkward, persistent, obstinate) |
| willful(adjective, strong, tough, difficult, awkward) |
| Trojan(strong, tough, bold, resolute, spirited) |
| abiding(adjective, persevering) |
| adamantine(adjective, set, strong, hard, tough) |
| adventuresome(strong, tough, bold, spirited, brave) |
| adventurous(strong, tough, noble, bold, spirited) |
| anal-retentive(adjective, persistent, obstinate, insistent, dogged) |
| assured(strong, tough, bold, wise, spirited) |
| authoritarian(adjective, strong, hard, tough, sturdy) |
| awkward(tough, difficult, wild, irritable, restless) |
| barely |
| beyond control |
| bloody-minded(adjective, persistent, obstinate, insistent, dogged) |
| breachy |
| chin-up(strong, bold, spirited, brave, courageous) |
| chivalrous(strong, vigorous, noble, bold, spirited) |
| coming on strong(expression, adjective, idiom, bold, brave) |