nondiscoverable

• a word derived from discover.
  discover

  verb (used with object)

  to see, get knowledge of, learn of, find, or find out; gain sight or knowledge of (something previously unseen or unknown).

Related Words

• catch
• come upon
• design
• detect
• determine
• devise
• disclose
• explore
• hear
• identify
• invent
• learn
• locate
• notice
• observe
• realize
• recognize
• reveal
• see
• spot