Used when nutrition or health is lacking. It suggests a need for improvement to achieve well-being. Without enough sunlight, people can become vitamin D deficient.
Pro Tip 2/3
Scientific Assessment
Often found in scientific or technical reports about shortages in substances or elements. The soil tests revealed a deficient level of nitrogen for plant growth.
Pro Tip 3/3
Implicit Urgency
Carries a sense of urgency implying that the deficiency should be rectified soon. They found the network security system to be deficient and in need of immediate upgrades.