1. not safe; involving or exposing one to danger or risk of injury

Examples

• The old bridge was deemed unsafe for heavy vehicles.
• It’s unsafe to drive in this fog.
• The building was evacuated due to unsafe conditions.
• Swimming alone at night is unsafe.
• The ladder looked unsafe, so we used a different one.
• Workers refused to enter the unsafe mine shaft.
• The playground equipment was removed because it was unsafe.