1. lacking energy or vigor; inactive or sluggish
Usage: medical; technical
2. showing reduced or absent immune response to antigens
Usage: medical; immunology

Examples

• The patient appeared anergic and showed little interest in activities.
• Anergic individuals may not respond normally to skin tests.
• The medication left him feeling anergic and drowsy.
• Doctors noted the anergic response to the tuberculin test.
• Her anergic state made it difficult to assess her immune function.
• The anergic patient required careful monitoring during treatment.