But every fool. — Self-willed person. (Comp. Proverbs 1:22.)
Will be meddling. — Or, rather, shewing his teeth: (Comp. Proverbs 17:14) thinking that his own personal dignity is at stake.
Related Commentaries of Proverbs 20:3
Proverbs 20:3
3 It is an honour for a man to cease from strife: but every fool will be meddling.