unwatched

/ʌnˈwɑtʃt/
adjective
  1. Not observed, monitored, or supervised.
    • The children left their backpacks unwatched for a moment, and someone took them.
    • She felt nervous leaving the stove unwatched while she answered the phone.
    • The security guard made sure no area of the museum remained unwatched.
Antonyms