| authentic(adjective, reasonable, solid, realistic, absolute) |
| convincing(adjective, clear, certain, definite, precise) |
| decided(adjective, clear, plain, certain, definite) |
| provable(adjective, clear, valid, undoubtable) |
| real(adjective, clear, certain, definite, absolute) |
| unassailable(adjective, certain, true) |
| unimpeachable(adjective, certainty) |
| conspicuous(adjective, clear, simple, sharp, plain) |
| fixed(adjective, clear, certain, definite, valid) |
| manifest(adjective, clear, sharp, definite, obvious) |
| palpable(adjective, clear, sharp, obvious, evident) |
| steadfast(adjective, clear, certain, definite, stability) |
| unambiguous(adjective, clear, sharp, definite, precise) |
| unarguable(adjective, definite, precise, sure, decisive) |
| unerring(adjective, clear, certain, valid, unquestionable) |
| unquestioned |
| verifiable(adjective, clear, obvious, valid, evident) |
| accurate(adjective, certain, absolute, unquestionable, indisputable) |
| apparent(adjective, clear, sharp, plain, straightforward) |
| assured(adjective, clear, certain, sure, positive) |