The boots may be nice, but they're 'worthless' if they don't fit you.
This land is 'worthless' [='useless'] for agriculture.
She's depressed and believes that she's 'worthless'.
(..) purchase agreements, allowing you to buy stock in the newly re incorporated Facebook, as opposed to the old shares, which are now worthless. The third is an exchange agreement allowing you to exchange the old shares for new shares, and then finally a voter holding agreement. (..)2010 The Social Network