convincinggerund / present participle Convincing is a present participle functioning adjectivally; marking it explicitly clarifies morphology.
convaincantAu sens de capable de persuader ou de convaincre. Her convincing argument swayed the jury in her favor.
Son argument convaincant a fait pencher le jury en sa faveur.
convaincantAu sens de plausible, crédible, qui paraît raisonnable. convincegerund / present participle Used attributively or predicatively to describe something that is persuasive, e.g. "a convincing argument".
She gave a convincing explanation for her absence.
Elle a donné une explication convaincante de son absence.