עָרַם (ʻâramaw-ram'verbbe shrewd)
[Heb] עָרַם ETCBC: ערם‎ (verb|be cunning) OSHL: p.fn.aa TWOT: 1698 GK: H6891 Greek: ἀλλόφυλος, διΐστημι, πανοῦργος
Derivation: a primitive root;
Strong's: properly, to be (or make) bare; but used only in the derivative sense (through the idea perhaps of smoothness) to be cunning (usually in a bad sense)
KJV: [idiom] very, beware, take crafty (counsel), be prudent, deal subtilly.