closed

Universal Words adjective 1 [notbeforenoun] shut: Keep the door closed. 2 [notbeforenoun] shut, especially of a shop/store or public building that is not open for a period of time: The museum is closed on Mondays. * This road is closed to traffic. 3 not willing to accept outside influences or new ideas: a closed society * He has a closed mind. 4 [usuallybeforenoun] limited to a particular group of people; not open to everyone: a closed membership OPPOPEN -< CLOSE IDIOMS behind closed doors without the public being allowed to attend or know what is happening; in private: The meeting was held behind closed doors. a closed book (to sb) a subject or person that you know nothing about: Nuclear physics is a closed book to most of us.