| believable(adjective, close, open, correct, honest) |
| certified(adjective, evidential) |
| confirmed(adjective, good, sound, right, reasonable) |
| historical |
| incontrovertible(adjective, reasonable, solid, realistic, absolute) |
| indisputable(adjective, certain, true, substantial, real) |
| ingenuous(adjective, good, simple, fair, proper) |
| initial(adjective, original, first, previous, earliest) |
| kosher(noun, adjective, good, open, sound) |
| legal(adjective, good, sound, correct, right) |
| on the level(expression, adjective, idiom, good, close) |
| orthodox(truth, valid, lawful, rightful) |
| prosaic(adjective, literal) |
| sterling(adjective, true, real, genuine, indisputable) |
| validated(adjective, evidential) |
| very(adjective, correct, right, exact, pure) |
| above-board(honest, fair, proper, straight, decent) |
| aboveboard(reasonable, honest, acceptable, realistic, reliable) |
| authenticated(adjective, honest, certain, proper, true) |
| veridical(adjective, close, sound, correct, right) |