Proverbs 21:24 New English Translation

²⁴A proud^[a] and arrogant^[b] person, whose name is “Scoffer,”^[c]
acts^[d] with overbearing pride.^[e]

Proverbs 21:24 tn The word זֵד (zed, “proud”) comes from the verb זִיד (zid, “to boil up; to seethe; to act proudly [or, presumptuously].” Just as water boiling up in a pot will boil over, so the presumptuous person “oversteps” the boundaries.
Proverbs 21:24 tn The word יָהִיר (yahir) means “haughty,” that is, to be or show oneself to be presumptuous or arrogant.
Proverbs 21:24 tn Heb “proud haughty scorner his name” (KJV similar). There are several ways that the line could be translated: (1) “Proud, arrogant—his name is scoffer” or (2) “A proud person, an arrogant person—‘Scoffer’ is his name.” BDB 267 s.v. זֵד suggests, “A presumptuous man, [who is] haughty, scoffer is his name.”
Proverbs 21:24 tn Heb “does.” The Qal active participle “does” serves as the main verb, and the subject is “proud person” in the first line.
Proverbs 21:24 tn The expression בְּעֶבְרַת זָדוֹן (b^eʿevrat zadon) means “in the overflow of insolence.” The genitive specifies what the overflow is; the proud deal in an overflow of pride. Cf. NIV “overweening pride”; NLT “boundless arrogance.”sn The portrait in this proverb is not merely of one who is self-sufficient, but one who is insolent, scornful, and arrogant.

New English Translation (NET)