Found 2 items, similar to fanatical.
English → English (WordNet) Definition: fanatical fanatical adj : marked by excessive enthusiasm for and intense devotion to a cause or idea; “rabid isolationist” [syn: fanatic, overzealous, rabid]
English → English (gcide) Definition: Fanatical Fanatical \Fa*nat"ic*al\, a. Characteristic of, or relating to, fanaticism; fanatic. -Fa*nat"ic*al*ly, adv. -- Fa*nat"ic*al*ness, n. [1913 Webster]