waste of space
Someone or something that is blatantly unhelpful, worthless, or useless. Boy, what a waste of space— he's just 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.
a waste of space
BRITISH, INFORMALIf you describe someone as a waste of space, you mean that they are completely useless. The woman in charge of administration is a complete waste of space.
a waste of ˈspace
(spoken) a person who is useless or no good at anything: What did you have to ask him along for? He’s a complete waste of space!