כְּפִירkephir meaning in Biblical Hebrew
young lion (metaphorically, a powerful ruler) · noun (masculine)
Also spelled in English: kefir
This isn't just any lion; it's the specific, untamed power of a young, roaring beast. That's the image for a particular kind of ruler.
אַיֵּה מְעוֹן אֲרָיוֹת וּמִרְעֶה הוּא לִכְפִירִים הָלַךְ אָרִי אָרְבֵּה שָׁם כְּפִיר אֵין מַחֲרִיד׃
“Where is the dwelling of the lions, and the feeding place of the young lions, where the lion and the lioness walked, and the lion's cub, and none made them afraid? (Nahum 2:12)”
Who in the Tanakh would you describe as a כְּפִיר?