1. a strong current beneath the surface of water that flows in a different direction from the surface current, especially one that pulls swimmers away from shore
Usage: oceanography
2. an underlying feeling, influence, or tendency that is often hidden or contrary to what appears on the surface
Usage: figurative

Examples

• The lifeguard warned swimmers about the dangerous undertow near the pier.
• Several beachgoers were rescued from the strong undertow that pulled them out to sea.
• The calm surface of the water hid a powerful undertow beneath.
• There was an undertow of tension in the room despite the polite conversation.
• The novel explores the undertow of grief that runs through the family’s daily life.
• An undertow of dissatisfaction spread through the company after the layoffs.
• She felt caught in an emotional undertow she couldn’t escape.