| effectual(adjective, influential, authoritative) |
| extreme(adjective, end, hinder, last, past) |
| last(adjective, end, hinder, extreme, past) |
| significant |
| absolute(definite, precise, sure, decisive, final) |
| authentic(sound, reasonable, rational) |
| causal factor(noun, expression, idiom) |
| clincher |
| convincing(sound, reasonable, rational, definite, precise) |
| determinate(adjective, end, last, extreme, absolute) |
| determined(adjective, conclusive) |
| eventual(adjective, end, last, extreme, past) |
| farthest(adjective, end, last, extreme, past) |
| incontrovertible(definite, precise, sure, absolute, decisive) |
| indisputable(definite, precise, sure, decisive, final) |
| irrefutable(sound, reasonable, rational, definite, precise) |
| persuasive(sound, reasonable, rational) |
| pivotal |
| reliable(convincing, believable, plausible) |
| satisfactory(honest, solid, convincing, believable, plausible) |