fanaticism fanaticalness • fanaticize · · · Info · Definitions · Synonyms · Characters · · fanaticism · · Text Latin · · Script 10 · · Length Definitions · · · (noun) excessive intolerance of opposing views. Synonyms: fanatism, zealotry. · · Noun Definition 1 Synonyms · · · fanatism · · Synonym 1 zealotry · · Synonym 2 Characters · · a latin small letter a U+0061 c latin small letter c U+0063 f latin small letter f U+0066 i latin small letter i U+0069 m latin small letter m U+006D n latin small letter n U+006E s latin small letter s U+0073 t latin small letter t U+0074