bonus (good; opposed to malus, bad, or adulterinus, counterfeit): justus (such as it ought to be): idoneus (fit, proper): ratus (confirmed, ratified). (The words are found in this connection and order.) ratus ac firmus (well established): legitimus (conformable to law): firmus ad probandum (that proves, convincing; e.g., argumentum): gravis (weighty; hence also, convincing; e.g., argumentum; ☞ Cic., Rosc., Com., 12, 36, argumentum gravissimum et firmissimum: i. e., the most valid, proof). To be valid, valere (general term); vigere (to be in vogue, to continue in force); ratum esse (to be firmly established; of laws, decrees, compacts); exerceri (to be in force; of laws; Liv., 6, 51): esse (to exist: ☞ obtinere or obtineri is quite unclassical in the sense of valere; Vid: Klotz, Cic., Tusc., 5, 41, 118, and is even wrong in the sense of esse): to admit anything as valid, aliquid ratum habere or ducere; aliquid probare, approbare, comprobare (to approve of it); aliquid accipere, admittere (to accept, allow).