fanatic

a person who likes or supports a particular sport, team, singer, etc., very much and often shows this in an enthusiastic way

fanático, seguidor entusiasta

• a fanatic of something

Collocations football fanatics · music fanatics

• He's a real football fanatic.

  Es un verdadero fanático del fútbol.

a person who has very strong beliefs about something and is willing to do extreme things because of these beliefs, especially when this causes problems for other people

extremista, fanático

• a fanatic of something

Collocations political fanatics · religious fanatics

• The group is led by a religious fanatic.

  El grupo está liderado por un fanático religioso.

very strong or extreme in the way that someone feels about something; showing very strong feelings

extremo, excesivo

• be fanatic about something

Collocations fanatic about cleanliness · fanatic about food quality

• She's fanatic about her appearance.

  Ella es extremadamente obsesiva con su apariencia.