| earnest(adjective, complete, warm, total, sensible) |
| hearty(adjective, strong, complete, warm, total) |
| implacable(adjective, tough, firm, determined, resolute) |
| incontrovertible(adjective, clear, certain, definite, stability) |
| invincible(adjective, persistent, obstinate, insistent, dogged) |
| iron(adjective, strong, tough, firm, determined) |
| mulish(adjective, tough, firm, determined, resolute) |
| pat(adjective, firm, solid, determined, usual) |
| patient(adjective, persevering) |
| persisting(adjective, strong, tough, firm, determined) |
| positive(adjective, good, clear, strong, complete) |
| strict(adjective, close, strong, correct, flat) |
| unconquerable(adjective, persistent, obstinate, insistent, dogged) |
| unqualified(adjective, strong, complete, flat, firm) |
| unswayable(adjective, determined, resolute, strict, obstinate) |
| wholehearted(adjective, complete, keen, firm, total) |
| balanced(adjective, calm, strong, secure, easy) |
| deliberate(adjective, intense, determined, resolute, focused) |
| eternal(adjective, certain, steady, regular, persistent) |
| everlasting(adjective, set, stable, persistent, constant) |