| long-suffering(adjective, calm, quiet, gentle, restrained) |
| maintaining(verb, continuing) |
| on the go(expression, idiom, keen, energetic, lively) |
| opinionated(tough, firm, unreasonable, grim, inflexible) |
| particular(adjective, thorough, meticulous, painstaking) |
| permanent |
| persevere |
| persnickety(adjective, thorough, meticulous, painstaking) |
| philosophical(adjective, calm, quiet, understanding, gentle) |
| picky(adjective, thorough, meticulous, painstaking) |
| plodding(adjective, strong, firm, determined, steady) |
| plugging(adjective, strong, keen, firm, lively) |
| punctual(adjective, thorough, meticulous, painstaking) |
| reliable(adjective, resolute, persistent, dedicated, unwavering) |
| spirited(adjective, determined, active, resolute, brave) |
| staying |
| steely(adjective, resolute) |
| stickler(adjective, thorough, meticulous, painstaking) |
| stoical(adjective, calm, quiet, understanding, gentle) |
| strong(adjective, tough, flat, firm, determined) |