Proverbs 16:27 New English Translation

²⁷A wicked scoundrel^[a] digs up^[b] evil,
and his slander^[c] is like a scorching fire.^[d]

Proverbs 16:27 tn Heb “a man of belial.” This phrase means “wicked scoundrel.” Some translate “worthless” (so ASV, NASB, CEV), but the phrase includes deep depravity and wickedness (C. H. Toy, Proverbs [ICC], 125-26).
Proverbs 16:27 tn Heb “digs up” (so NASB). The “wicked scoundrel” finds out about evil and brings it to the surface (Prov 26:27; Jer 18:20). What he digs up he spreads by speech.
Proverbs 16:27 tn Heb “on his lips” (so NAB) The term “lips” is a metonymy of cause. To say that “evil” is on his lips means that he talks about the evil he has dug up.
Proverbs 16:27 sn The simile stresses the devastating way that slander hurts people. W. McKane says that this one “digs for scandal and…propagates it with words which are ablaze with misanthropy” (Proverbs [OTL], 494).

New English Translation (NET)