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be a waste of space
be a waste of space
slang To be blatantly unhelpful or useless. This phrase is often applied to people as a derogatory term. Boy, he's a waste of space, standing around while the rest of us all move furniture. The old monitor doesn't work anymore, so at this point it's just a waste of space. Let's trash it.
be a waste of space
(informal) if you say that someone is a waste of space, you mean that they do not do anything useful and you do not like them Her husband's a complete waste of space.