The phrase often implies an accidental escape of a substance rather than intentional. The factory was fined after toxic chemicals leaked out into the river.
Pro Tip 2/3
Physical Object
Used mostly for tangible substances, like water or air, not emotions or ideas. I noticed air leaking out of the balloon, making it deflate quickly.
Pro Tip 3/3
Potential Danger
Can indicate a hazardous situation, especially with harmful substances. Gas was leaking out of the cylinder, prompting an evacuation of the building.