unguarded

Lacking protection or a guard; vulnerable.

Displaying, having, or feeling no wariness; incautious.

Not guarded; not watched; not defended; having no guard.

Careless; negligent; not cautious; not done or spoken with caution: as, an unguarded expression or action; to be unguarded in conversation.

Having no guard or protection; vulnerable.

Displaying a lack of caution or thought.

displaying or feeling no wariness

lacking protection or a guard