1. concealed from view; not visible or apparent
2. kept secret; not revealed or disclosed

Examples

• The treasure was hidden beneath the old oak tree.
• She discovered a hidden door behind the bookshelf.
• There are hidden costs that weren’t mentioned in the contract.
• The cat found a hidden spot under the porch.
• His hidden talents surprised everyone at the talent show.
• The hidden meaning of the poem became clear after discussion.
• They kept their relationship hidden from their families.