Convincing

Overcoming by reason, argument, evidence; causing to believe. When one is convinced he cannot be more convinced. If evidence is convincing, it is sufficient in any case, and to say it ought to be more convincing in one case than another, is giving to the word degrees of comparison when the word itself is superlative. 57 Wis. 626. "Convincing proof" may be said to mean that degree of certainty required to sustain a given postulate.

89 Me. 442.