What is another word for "proof"?

Roget's Thesaurus (1911) lists these synonyms for "proof": adamant, adamantean, adamantine, adust, agent, anaesthesia, anaesthetic, anaesthetize, anhydrous, arefaction, arid, aridity, benumb, biscuit, block, blow, blunt, board, bone, bony, brick, buckram, calculous, callosity, callous, cartilage, cartilaginous, case, cast, cement, chemical, chloral, chloroform, clothes, clothesline, coma, comatose, concrete, corneous, crag.