Where does “fanaticism” come from?

Fanaticism derives from English fanatic, ultimately from Latin fanum meaning temple, with the suffix -icus forming an adjective, and -ισμός forming a noun denoting the state or practice.

fanaticism (English): The characteristic or practice of being a fanatic

Definitions

  1. The characteristic or practice of being a fanatic

Ancestry of “fanaticism”, step by step

StepLanguageWordMeaning
1EnglishfanaticFanatical; Showing evidence of possession by a...
2Frenchfanatiquefanatic, fanatical; fanatic
3Latinfānāticustemple
4Latin-aticusUsed to form adjectives indicating a relation to...
5Latin-ātused
6Proto-Italic-ātos
7Proto-Indo-European-éh₂tosForms adjectives from nouns, indicating the possession of a thing or a quality
Every word from Proto-Indo-European -éh₂tosEvery word from Latin -ātusEvery word from Latin -aticus