The Hebrew that is translated as “wild ass of a man” of “wild donkey” in English is translated in Chol as “uncontrollable” (with a negative connotation).
Verse: Gen 16:12
וְה֤וּא יִהְיֶה֙ פֶּ֣רֶא אָדָ֔ם יָד֣וֹ בַכֹּ֔ל וְיַ֥ד כֹּ֖ל בּ֑וֹ וְעַל־פְּנֵ֥י כָל־אֶחָ֖יו יִשְׁכֹּֽן׃
Retrieving the verse