英汉词典

1. 秘密的;机密的;保密的
    If something is secret, it is known about by only a small number of people, and is not told or shown to anyone else.

secret的近义词

    e.g. Soldiers have been training at a secret location...
           士兵们一直在一个秘密场所训练。
    e.g. The police have been trying to keep the documents secret.
           警方一直设法将这些文件保密。