H391. akzab
אַכְזָב adjective deceptive, disappointing (elative; opposed to אֵיתָן q. v. below יתן) — only absolute singular: — [Micah 1:14] (with play on proper name אַכְזִיב); of a deceptive, disappointing stream (compare [Isa 58:11]) [Jer 15:18] (|| נֶאְמָ֑נוּ לֹא מַיִם; on meaning compare [Job 6:15]ff.)