| Adj. | 1. | hidden - not accessible to view; "concealed (or hidden) damage"; "in stormy weather the stars are out of sight"invisible, unseeable - impossible or nearly impossible to see; imperceptible by the eye; "the invisible man"; "invisible rays"; "an invisible hinge"; "invisible mending" | |
| 2. | hidden - covered from view; "her face buried (or hidden) in her hands"; "a secret buried deep within herself"concealed - concealed or hidden on any grounds for any motive; "a concealed weapon"; "a concealed compartment in his briefcase" | |
| 3. | hidden - designed to elude detection; "a hidden room or place of concealment such as a priest hole"; "a secret passage"; "the secret compartment in the desk"concealed - concealed or hidden on any grounds for any motive; "a concealed weapon"; "a concealed compartment in his briefcase" | |
| 4. | hidden - difficult to find; "hidden valleys"; "a hidden cave"; "an obscure retreat"concealed - concealed or hidden on any grounds for any motive; "a concealed weapon"; "a concealed compartment in his briefcase" | |