1. no longer stuck or attached; freed from being fixed in place
2. having failed or gone wrong; in a state of difficulty or confusion
Usage: informal

Examples

• The stamp came unstuck from the envelope.
• After hours of trying, the door finally came unstuck.
• The sticker became unstuck in the heat.
• Their carefully laid plans came unstuck when it started raining.
• The whole project came unstuck due to poor planning.
• When the computer crashed, everything came unstuck.
• The wheel came unstuck from the axle.