1The new employee's language skills were deficient, so she had trouble communicating with clients.
2Is the current funding sufficient, or will the project be deficient in resources?
3His knowledge of mathematics was deficient, which made it difficult for him to solve the problem.
4The company's customer service was deficient, leading to a significant loss of customers.
5The report highlighted the deficient safety measures in the factory, which posed a risk to the workers.