The word proof derives from the Latin 'to test'; related words include English probe, probation, and probability, as well as Spanish 'to taste' (sometimes 'to touch' or 'to test'),"proof" New Shorter Oxford English Dictionary, 1993, OUP, Oxford. Italian 'to try', and German 'to try'. The legal term probity means authority or credibility, the power of testimony to prove facts when given by persons of reputation or status.
The word proof derives from the Latin 'to test'; related words include English probe, probation and probability, as well as Spanish 'to taste' (sometimes 'to touch' or 'to test'),"proof" New Shorter Oxford English Dictionary, 1993 OUP, Oxford. Italian 'to try', and German 'to try'. The legal term probity means authority or credibility the power of testimony to prove facts when given by persons of reputation or status.