Which word best describes something that is "negligible"?

The term "negligible" refers to something that is so small or unimportant that it can be disregarded. In this context, the best word to describe something that is negligible is "insubstantial," as it conveys the idea of lacking significant weight or importance. When something is insubstantial, it does not have enough force or impact to matter, aligning perfectly with the meaning of negligible. This choice highlights the idea that the item in question is not worth serious consideration or concern due to its minimal presence or effect.