/ Dictionary / Index A anergy: Meaning and Definition of Find definitions for: an•er•gy Pronunciation: (an'ur-jē), [key] — n. deficiency of energy. lack of immunity to an antigen. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: anergy (Thesaurus) anepigraphic aneroid Related Content Daily Word Quiz: crutiny Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language