Fan is short for the word fanatic. A fanatic is someone overly enthusiastic with much devotion for something. At a ballpark you will see the patrons screaming and yelling (enthusiastic) and strongly rooting for their team to win no matter how good or bad the team may be (devotion).
"Spiritless" is the opposite of enthusiastic.
The head cheerleader was very enthusiastic.
My friend is very enthusiastic!
Enthusiastic
To say the word enthusiastic in French you say the word enthousiaste. In the Italian language this word is said as entusiasta.
overly complicated = complex
The word 'enthusiastically' is the adverb form of the adjective 'enthusiastic'.The abstract noun related to the adjective 'enthusiastic' is enthusiasm.
Enthusiastic employees outproduce and outperform employees who are not motivated to perform.
Antonym: enthusiastic
avid
The correct spelling is "passionate" (enthusiastic, or sensual).