1. to remove or loosen by turning in the opposite direction of tightening
2. to remove the cap or lid of something by twisting

Examples

• I need to unscrew these bolts to remove the panel.
• Can you help me unscrew the lid on this jar?
• The mechanic had to unscrew several parts to reach the engine.
• She carefully unscrewed the cap from the bottle.
• The screws were so tight that it took considerable effort to unscrew them.
• He unscrewed the light bulb and replaced it with a new one.