Formal:
* The impact of the policy change on the economy was negligible. (Meaning: The impact was very small and unimportant.)
* The likelihood of encountering a rare species in this area is negligible. (Meaning: It's highly unlikely.)
* The cost of the repairs was negligible compared to the overall value of the building. (Meaning: The cost was insignificant in comparison.)
Informal:
* The amount of sugar in this drink is negligible, so don't worry about it. (Meaning: There's practically no sugar.)
* The chances of winning the lottery are negligible, but people still dream. (Meaning: The chances are extremely low.)
* My contribution to the project was negligible, so I won't take credit. (Meaning: I didn't do much work.)
Remember that "negligible" implies something is so small or insignificant that it can be disregarded.