The crossword solution for the term 'Like Hubbard's Cupboard' is BARE, which is a four letter word. 'BARE' is an adjective that means without covering or clothing; naked; uncovered; unadorned; plain; destitute; deprived; empty; destitute of furniture; unfurnished. This phrase is a reference to the famous children's book series 'The Magic Tree House' by Mary Pope Osborne, in which the main characters Jack and Annie find a mysterious cupboard in the woods. The cupboard is owned by Morgan le Fay, a powerful sorceress, and it is completely BARE inside.