Undermanned (adjective)

1. Having too few people to operate or staff effectively.
2. Not having enough personnel to complete a task or meet the needs.

Origin:

Early 20th century: from under- + manned.

Examples:

1. The factory was undermanned, and the workers were overworked.
2. The store was undermanned, and the customer service was poor.
3. The team was undermanned and couldn't compete with the other teams.
4. The ship was undermanned, and the crew was stretched thin.
5. The department was undermanned, and the employees were struggling to keep up with the workload.