From atsar; subjectively, control -- rule.
see HEBREW atsar
H4623. matsar
מַעְצָר noun [masculine] restraint, control; — ׳מ Proverbs 25:28 a man whose spirit is without control.
עקב (√ of following, meaning dubious: Thes assumes be protuberant, whence both עָקֵב heel and II. עָקֹב hilly).