adjective. Not significant or important enough to be worth considering; trifling.

Capable or admitting of being neglected or disregarded; neglectable.

adjective. That may be neglected, disregarded, or left out of consideration; too small or unimportant to be worthy of notice.

adjective. Able to be ignored or excluded from consideration; too small or unimportant to be of concern.

adjective. so small as to be meaningless; insignificant

adjective. not worth considering

"Officials tell us that the amount of anthrax found in the mail was what they call negligible, that it actualy required two tests to even find it, so they don't think it's a large amount."

minimal  minimum  worthless  

neglected  negligent  

appreciable  cumulative  disproportionate  immaterial  impervious  

back-burner  cursory  depthless  dinky  dispensable