| sure(adjective, clear, complete, certain, reliable) |
| reliable(adjective, clear, certain, certainty, flawless) |
| unfailing(adjective, certain, flawless, reliable, trustworthy) |
| certain(adjective, certain, reliable, valid, dependable) |
| trustworthy(adjective, certainty, dependable, unfailing, unerring) |
| unerring(adjective, clear, certain, precise, sure) |
| dependable(adjective, certain, flawless, reliable, trustworthy) |
| perfect(adjective, flawless, faultless, dependable, unerring) |
| foolproof(adjective, dependable, unerring) |
| inerrant(adjective, complete, certain, sure, valid) |
| secure(verb, adjective, certain) |
| correct(adjective, perfect, precise, flawless, faultless) |
| exact(adjective, perfect, precise, flawless, faultless) |
| faultless(adjective, perfect, flawless, dependable, unerring) |
| flawless(adjective, perfect, faultless, dependable, unerring) |
| absolute(adjective, certain) |
| accurate(adjective, perfect, certain, precise, flawless) |
| effective(adjective, dependable, unerring) |
| impeccable(adjective, flawless, dependable, unerring) |
| inerrable(adjective, dependable, unerring) |