- 1(informal) a person who is extremely enthusiastic about something synonym enthusiast a fitness/crossword, etc. fanatic
- 2(disapproving) a person who holds extreme or dangerous opinions synonym extremist religious fanatics
fanaticaljump to other results
NAmE//fəˈnæt̮ɪkl//adjective a fanatical supporter the fanatical anti-communists a fanatical interest in baseball She's fanatical about healthy eating.
fanaticallyjump to other results
NAmE//fəˈnæt̮ɪkli//adverb fanatically organized