Mind - The Hebrew word is used sometimes for “mind” or “reason,” sometimes for “passion,” or “wrath.” The reticence commended would include both; but the verb “keepeth it in” (rendered “stilleth,” in Psalms 65:7) is slightly in favor of the second of the two senses.
Related Commentaries of Proverbs 29:11
Proverbs 29:11
11 A fool uttereth all his mind: but a wise man keepeth it in till afterwards.