| tested(verb, adjective, test, expert, reliable) |
| proven(verb, adjective, test, expert, reliable) |
| attempted |
| proved(verb, adjective, good, strong, solid) |
| verified(verb, adjective, tested, experimented) |
| examined(verb, adjective, test, expert, reliable) |
| dependable(adjective, good, close, strong, correct) |
| tried and true(expression, adjective, idiom, close, correct) |
| certified(adjective, test, expert, reliable, tested) |
| trustworthy(adjective, good, close, strong, correct) |
| reliable(adjective, good, close, correct, reasonable) |
| well-tried(adjective, test, expert, reliable) |
| determined(verb, good, strong, solid, steady) |
| endeavored(verb, adjective, intended) |
| sure(adjective, good, close, strong, correct) |
| trusty(adjective, good, close, strong, correct) |
| experimented(verb, experimented) |
| well-versed(familiar, sophisticated, knowledgeable, skilled, competent) |
| used |
| assayed(verb, experimented) |