anergy
PRONUNCIATION:(AN-uhr-jee)
MEANING:noun:
1. Lack of energy.
2. The lack of an immune response to a foreign substance.
ETYMOLOGY:From an- (not) + ergon (work). Earliest documented use: 1890. The opposite of sense 1 is energy and the opposite of sense 2, allergy. Earliest documented use: 1890.
USAGE:“The girl wondered if the man did not have the ability to react to the skin test because of anergy or inactivity of his immune system.”
William Lynes; 606 University; iUniverse; 2016.