| prove |
| ratification(noun, approval, evidence, confirmation, passage) |
| research(noun, experiment) |
| resistive(adjective, resist, resistant) |
| specimen(noun, copy, evidence, occasion, occurrence) |
| stamp(verb, mark, light, sign, confirmation) |
| standard(noun, check, measure, approval, examination) |
| testing(noun, struggle, examination, test, analysis) |
| touchstone(noun, check, measure, approval, examination) |
| try(noun, study, check, measure, struggle) |
| unsusceptible(adjective, resist, resistant) |
| waterproof(adjective, tight, impervious, hermetic) |
| watertight(adjective, tight, impervious, hermetic) |
| whyfor(noun, cause, reason, base, call) |
| account(noun, cover, cause, reason, case) |
| acquaintance(noun, action, understanding, knowledge, experience) |
| ammunition |
| argumentation(noun, reason, case, claim) |
| attempt(noun, study, check, measure, struggle) |
| backing(noun, support, action, base, beginning) |