Word Study
energumen
CIDE DICTIONARY
energumen, n. [L. energumenos, fr. Gr. possessed by an evil spirit, from : cf. F. énergumène. See Energetic.].
One possessed by an evil spirit; a demoniac. [1913 Webster]
OXFORD DICTIONARY
energumen, n. an enthusiast or fanatic.
Etymology
LL energumenus f. Gk energoumenos passive part. of energeo: see ENERGETIC
ROGET THESAURUS
energumen
Madman
N madman, lunatic, maniac, bedlamite, candidate for Bedlam, raver, madcap, crazy, energumen, automaniac, monomaniac, dipsomaniac, kleptomaniac, hypochondriac (low spirits), crank, Tom o'Bedlam, dreamer, rhapsodist, seer, highflier, enthusiast, fanatic, fanatico, exalte, knight errant, Don Quixote, idiot.For further exploring for "energumen" in Webster Dictionary Online