| certain(adjective, good, set, clear, understanding) |
| positive(adjective, good, set, clear, strong) |
| definite(adjective, good, clear, strong, complete) |
| confident(adjective, calm, clear, strong, easy) |
| indisputable(adjective, clear, certain, true, definite) |
| unquestionable(adjective, flat, total, solid, perfect) |
| secure(verb, adjective, calm, quality, strong) |
| assured(verb, adjective, clear, understanding, strong) |
| undeniable(adjective, clear, firm, perfect, certain) |
| incontestable(adjective, certain, true, definite, ideal) |
| firm(noun, adjective, calm, good, close) |
| reliable(adjective, calm, close, clear, strong) |
| incontrovertible(adjective, certain, true, definite, ideal) |
| unequivocal(adjective, good, clear, strong, flat) |
| absolute(adjective, clear, strong, sound, complete) |
| solid(adjective, calm, good, quality, strong) |
| safe(adjective, calm, good, quality, clear) |
| steady(adjective, calm, good, close, quality) |
| indubitable(adjective, set, clear, sound, correct) |
| irrefutable(adjective, clear, firm, solid, certain) |