1.
If something that someone says or writes is ~, it has no meaning, or appears to have no meaning.
She is fascinated by algebra while he considers it ~ nonsense.
ADJ
2.
Something that is ~ in a particular situation is not important or relevant.
Fines are ~ to guys earning millions.
ADJ
3.
If something that you do is ~, it has no purpose and is not at all worthwhile.
They seek strong sensations to dull their sense of a ~ existence.
= futile
ADJ