[10:10] 1 tn The term (קָרַץ, qarats) describes a person who habitually “winks” his eye maliciously as a secretive sign to those conspiring evil (Prov 6:13). This is a comparison rather than a contrast. Devious gestures are grievous, but not as ruinous as foolish talk. Both are to be avoided.
[10:10] 4 tn Heb “the fool of lips”; cf. NASB “a babbling fool.” The phrase is a genitive of specification: “a fool in respect to lips.” The term “lips” is a metonymy of cause (= lips) for effect (= speech). The word for fool (אֶוִיל, ’evil) refers to someone who despises knowledge and discernment.