1. thick cloud of tiny water droplets suspended in the atmosphere at or near the earth’s surface that obscures or restricts visibility
2. a state or cause of mental confusion or lack of clarity
Usage: figurative

1. to cover or become covered with fog
2. to make or become confused or unclear
Usage: figurative

Examples

• Dense fog made driving dangerous this morning.
• The lighthouse beam cut through the thick fog.
• I’m still in a fog after that long flight.
• The windows fogged up from the steam.
• Don’t let emotions fog your judgment.
• The mirror fogged when I took a hot shower.
• Heavy fog delayed flights at the airport.