unalert (adjective)

1. In the science fiction novel, the unalert crew fails to notice the approaching enemy spaceship until it is too late.

2. In the cartoon, the unalert character falls into a series of traps because they are not paying attention to their surroundings.

3. In the anime series, the unalert protagonist walks into a dangerous situation without realizing the potential danger.

4. The unalert security guard fails to notice the suspicious activity happening inside the architecturally stunning building.