| chronic(adjective, set, continue, fixed, persistent) |
| confirmed(adjective, continue, certain, determined, usual) |
| deep-rooted(adjective, set, continue, fixed, impulse) |
| habitual(adjective, continue, usual, fixed, established) |
| ingrained(adjective, set, continue, fixed, impulse) |
| deep-seated(adjective, set, continue, fixed, established) |
| entrenched(adjective, set, continue, determined, usual) |
| persistent(adjective, usual, obstinate, established, insistent) |
| set(verb, adjective, continue, certain, usual) |
| fixed(verb, adjective, set, certain, usual) |
| rooted(verb, adjective, certain, determined, usual) |
| settled(adjective, set, continue, certain, determined) |
| permanent(adjective, impulse, established) |
| continuing(adjective, familiar, fixed, persistent, established) |
| incorrigible(adjective, bad, established, hopeless) |
| old(adjective, familiar, established, hardened, traditional) |
| perennial(adjective, familiar, established, hardened, enduring) |
| stubborn(adjective, characteristic, quality, firm, determined) |
| enduring(adjective, certain, familiar, limited, definite) |
| hardened(adjective, set, familiar, usual, fixed) |