Backbiting, covering, covert, [idiom] disguise(-th), hiding...

Definition

or (feminine) סִתְרָה; (Deuteronomy [32:38), from סָתַר; a cover (in a good or a bad, a literal or a figurative sense); backbiting, covering, covert, [idiom] disguise(-th), hiding place, privily, protection, secret(-ly, place).