There was none of you that convinced Job - There was no one to produce conviction on his mind, or rather, there was no one to reprove him by answering him - ענה מוכיח môkiyach ‛ânâh. They were completely silenced: and had nothing to reply to the arguments which he had advanced, and to his reflections on the divine government.
Related Commentaries of Job 32:12
Job 32:12
12 Yea, I attended unto you, and, behold, there was none of you that convinced Job, or that answered his words: