Synonyms: concealed
Definition: hidden on any grounds for any motive
Usage: a concealed weapon; a concealed compartment in his briefcase
Similar words: bushwhacking
Definition: lying in ambush
Usage: bushwhacking guerrillas attacking from ambush
Similar words: dark
Definition: secret
Usage: keep it dark
Similar words: stealthy, surreptitious, sneak, sneaky, furtive
Definition: marked by quiet and caution and secrecy; taking pains to avoid being observed
Usage: a furtive manner; a sneak attack; stealthy footsteps; a surreptitious glance at his watch
Similar words: obscure, hidden
Definition: difficult to find
Usage: hidden valleys; a hidden cave; an obscure retreat
Definition: designed to elude detection
Usage: a hidden room or place of concealment such as a priest hole; a secret passage; the secret compartment in the desk
Similar words: incognito
Definition: with your identity concealed
Similar words: lying in wait
Definition: waiting in concealment; in ambush
Usage: an army lying in wait in the forest
Similar words: sealed
Definition: undisclosed for the time being
Usage: sealed orders; a sealed move in chess
Similar words: secret
Definition: not open or public; kept private or not revealed
Usage: a secret formula; secret ingredients; secret talks
Similar words: sneaking, unavowed
Definition: not openly expressed
Usage: a sneaking suspicion
Synonyms: hidden, concealed, out of sight
Definition: not accessible to view
Usage: concealed (or hidden) damage; in stormy weather the stars are out of sight
Similar words: unseeable, invisible
Definition: impossible or nearly impossible to see; imperceptible by the eye
Usage: the invisible man; invisible rays; an invisible hinge; invisible mending