A negligible amount or difference means that it's extremely small and doesn't make much of a difference.
You often hear "negligible" when people are talking about amounts of money, time, or effort. For example, if you're planning to spend some cash on a new phone and someone says the extra features are only slightly better than last year's model, they might say the difference is negligible – it's not worth getting too excited about. You can also hear "negligible" in conversations about health risks or environmental impacts: if a small change in your diet won't make much of an impact on your overall well-being, that change is considered negligible.
Able to be neglected, ignored or excluded from consideration; too small or unimportant to be of concern.
Example: We found errors, but their effects were negligible.
