Bewilderment (noun)

The state of being confused and uncertain about what to do or think.

Origin:

Late middle english: from be- "completely" + wilder + -ment.

Examples:

1. The children looked at him with bewilderment.
2. He was filled with bewilderment when she told him the news.
3. The instructions left her in a state of bewilderment.
4. The complex explanation left the audience in bewilderment.
5. The sudden change of plans caused bewilderment among the team members.