| single-minded(adjective, firm, harsh, solid, intense) |
| steadfast(adjective, strong, secure, flat, firm) |
| stubborn(adjective, secure, firm, intense, deliberate) |
| unbending(adjective, strong, flat, firm, harsh) |
| uncompromising(adjective, secure, firm, harsh, cruel) |
| undeviating(adjective, strong, flat, firm, harsh) |
| unflinching(adjective, strong, flat, firm, harsh) |
| unstoppable(adjective, harsh, cruel, determined, fierce) |
| unwavering(adjective, firm, intense, deliberate, determined) |
| unyielding(adjective, strong, secure, flat, firm) |
| abiding(adjective, strong, firm, solid, certain) |
| acrimonious(adjective, severe, stiff, tight, strict) |
| active |
| agreed(adjective, firm, determined, usual, regular) |
| appointed(adjective, firm, determined, usual, regular) |
| arranged(adjective, firm, determined, usual, regular) |
| assiduous |
| be out for blood(adjective, intense, deliberate, determined, resolute) |
| bent(adjective, strong, flat, intense, certain) |
| binding(adjective, severe, stiff, tight, strict) |