LATIN DICTIONARYLexicon Latīnum
English → Latin

“proof” in Latin

The English word proof itself goes back to Latin probō, through proba.

Riddle & Arnold A Copious and Critical English–Latin Lexicon, 1864

proof
The act or mode of proving, probatio (in the Dig., also of proving before a court of justice): demonstratio (a showing by strong proof; in Vitr., 9, praef., 4, also of mathematical proof): argumentatio (by argument). To bring proof of anything [Vid: To PROVE]: it is difficult of proof, difficile est probatu.
Convincing argument, argumentum: ratio. To bring or allege proofs, argumenta or rationes afferre: to derive proofs from, argumenta ex re ducere, sumere, eruere (☞ a proof of anything, not argumentum pro aliqua re, but argumentum quo aliquid esse demonstratur, etc.): to bring many proofs for the existence of a God, multis argumentis Deum esse docere: that is no proof, nullum verum id argumentum est to produce or allege many proofs for that opinion, multa in eam partem probabiliter argumentari (Liv.). ☞ Argumentum is often left out when an adjective is used; e.g., “the strongest proof for this is, “, etc., firmissimum hoc afferri videtur, quod, etc. (Cic.)
Sign, token, signum: indicium: specimen (a visible sign; ☞ not in the plur.): documentum sui (sign of one’s ability): rudimentum, tirocinium (first sign of one’s proficiency in an art, etc.). To give or furnish a proof, rudimentum or tirocinium ponere; documentum sui dare (of one’s ability): specimen alicujus rei dare; significationem alicujus rei facere (e.g., probitatis): to serve as a proof, signo, indicio, documento esse.
Attempt to ascertain the quality of a person or thing, tentatio: tentamen: experimentum (an attempt, in order to gain experience): periculum (an attempt, attended with some risk). To make proof of a thing, experimentum alicujus rei capere; periculum alicujus rei or in aliqua re facere; aliquid tentare, experiri, or periditari; fidem alicujus explorare (to put to the proof).
(In printing) (In printing) trial sheet, *periculum typographicum (Ruhnken); *plagula exempli causa typis exscripta.
proof adj.
fidelis; (of armor, etc.) ad omnes ictus tutus (Liv.); impervius ferro: the mind is proof against misfortunes, animus malis sufficit (Ov.): virtue is proof against all force, nulla vi potest labefactari virtus (Cic.).

Quick answer

What is the Latin word for proof?
The usual Latin words for “proof” are probātiō, dēmōnstrātiō, argūmentātiō; also argūmentum, ratiō, signum. The right choice depends on the sense; see the distinctions below.

Entry from J. E. Riddle & T. K. Arnold, A Copious and Critical English–Latin Lexicon (rev. C. Anthon, New York: Harper, 1864), digitised by Fergus J. P. Walsh, CC BY-SA 4.0; Latin markup adapted by latindictionary.co.