тајна

noun.

1. something that should remain hidden from others (especially information that is not to be passed on) [secret]
2. information known only to a special group [arcanum, secret]

Descriptive adjective: тајни

adjective. See тајни.
   1. Nominative, feminine, singular form
   2. Nominative, neuter, plural form
   3. Accusative, neuter, plural form