| established(adjective, verb, usual, state, common) |
| validated(verb, adjective, established, approved, authorized) |
| inveterate(adjective, continue, certain, determined, usual) |
| certified(verb, adjective, certain, definite, sure) |
| set(adjective, continue, solid, certain, proper) |
| settled(verb, adjective, set, continue, solid) |
| affirmed(verb, adjective, certain, definite, sure) |
| chronic(adjective, set, continue, usual, fixed) |
| habitual(adjective, continue, common, usual, steady) |
| valid(adjective, sound, right, reasonable, rational) |
| approved(verb, adjective, certain, proper, sure) |
| authenticated(verb, adjective, approved, authorized, substantiated) |
| corroborated(verb, adjective, approved, endorsed, substantiated) |
| proved(verb, adjective, set, fixed, established) |
| proven(verb, adjective, sound, reasonable, rational) |
| substantiated(verb, adjective, approved, endorsed, tested) |
| ingrained(adjective, set, complete, continue, true) |
| verified(verb, substantiated, proved, ascertained) |
| certain(adjective, solid, determined, usual, regular) |
| demonstrated(verb, adjective, established, settled, approved) |