Charles Ellicott Commentary Proverbs 14:29

"He that is slow to anger is of great understanding; But he that is hasty of spirit exalteth folly." — Proverbs 14:29 (ASV)

He that is hasty of spirit exalts folly— that is, brings it into view, or shows himself highly foolish. Or it may signify, “he takes up and carries away folly as his portion,” as Proverbs 3:35 may be translated, fools receive shame for their portion.