Feminine of orem; trickery; or (in a good sense) discretion -- guile, prudence, subtilty, wilily, wisdom.
see HEBREW orem
H6195. ormah
עָרְמָה noun feminine craftiness, prudence; —
1 ׳בְע craftily Exodus 21:14 (E), Joshua 9:4 (JE).
2 ׳ע in Proverbs, in good sense, prudence Proverbs 1:4; 8:5, 12.