| willing |
| active(adjective, activity, keen, energetic, lively) |
| bound and determined(expression, adjective, idiom, serious) |
| conclusive(adjective, strong, easy, solid, certain) |
| definitive(adjective, resolution) |
| dynamic |
| forceful(adjective, clear, strong, tough, severe) |
| hanging(adjective, determined, obstinate, uncompromising, unshakeable) |
| harsh(adjective, severe, rigid) |
| hell-bent(adjective, firm, determined, fixed, serious) |
| incompliant(adjective, tough, firm, difficult, determined) |
| invariable(adjective, calm, strong, hard, solid) |
| invincible |
| iron-willed(adjective, determined, uncompromising, unshakeable) |
| keen(adjective, clear, tough, severe, intense) |
| lion-hearted(adjective, vigorous, noble, courage, courageous) |
| nervy(adjective, strong, tough, energetic, passionate) |
| patient(adjective, strong, firm, determined, steady) |
| perverse(adjective, hard, tough, sharp, difficult) |
| regular(adjective, firm, solid, determined, usual) |