This Hiphil verb means to cause shaking, slipping, or tottering—to make something unstable or cause someone to waver. Ezekiel 29:7 uses it metaphorically of Egypt's unreliability as an ally: when Israel leaned on Egypt (depicted as a staff), it broke and made all their backs shake or totter. The image powerfully conveys political betrayal—instead of providing support, Egypt's failure caused instability and injury. The verb captures the causative action of inducing instability in another. It relates to the root meaning of slipping, sliding, or losing firm footing.