From aqab; in the original sense, a knoll (as swelling up); in the denominative sense (transitive) fraudulent or (intransitive) tracked -- crooked, deceitful, polluted.
1) deceitful, sly, insidious 1a) deceitful, sly, insidious, slippery 1b) foot-tracked 2) steep, hilly Part of Speech: adjective A Related Word by BDB/Strong’s Number: from H6117 Same Word by TWOT Number: 1676c
2foot-tracked (denominative from I. עָקֵב) Hosea 6:8גִּלְעָד קִרְיַת מֹּעֲלֵי אָוֶן עֲֹקֻבָּה מִדָּם.
II. עָקֹבadjectivesteep, hilly (see √; compare difficult mountain path, Qor 90:11 hill); — Isaiah 40:4והיה הֶעָקֹב לְמִישׁוֺר let the steep ground (Chronicles) become a plain ("" הָֽרְכָסִים). compare Ecclus 6:20.
Isaiah 40:4 HEB:יִשְׁפָּ֑לוּ וְהָיָ֤ה הֶֽעָקֹב֙ לְמִישׁ֔וֹר וְהָרְכָסִ֖ים NAS: be made low; And let the rough ground become KJV: shall be made low: and the crooked shall be made straight, INT: be made become the rough A plain and the rugged
Jeremiah 17:9 HEB: עָקֹ֥ב הַלֵּ֛ב מִכֹּ֖ל NAS: The heart is more deceitful than all KJV: The heart [is] deceitful above all [things], and desperately wicked: INT:deceitful the heart all
Hosea 6:8 HEB:פֹּ֣עֲלֵי אָ֑וֶן עֲקֻבָּ֖ה מִדָּֽם׃ NAS: of wrongdoers, Tracked with bloody KJV: iniquity, [and is] polluted with blood. INT: work of wrongdoers Tracked bloody
difficult mountain path, Qor 90:11 
hill); —