וּלְבַ֥ב נִמְהָרִ֖ים יָבִ֣ין לָדָ֑עַת וּלְשׁ֣וֹן עִלְּגִ֔ים תְּמַהֵ֖ר לְדַבֵּ֥ר צָחֽוֹת׃
און דאָס האַרץ פֿון די איבעראײַלטע װעט פֿאַרשטײן צו װיסן, און די צונג פֿון די שטאַמלער װעט רעדן געלױפֿיק קלאָר.
Rashi
And the heart of the hasty shall understand to know Not like now, that “this people’s heart is becoming fat” (ibid.).
Ibn Ezra
נמהרים The rash. Hasty in a foolish way. It is derived from מהר to be hasty.
Rashi
and the tongue of the stammerers, etc. Not like now, “for with distorted speech” (supra 28:11).
Rashi
stammerers Anyone who does not know how to direct his speech to be clear is termed עִלֵּג or נִלְעַג.