This is the 2234th most frequent Chinese word.
發燒
"發燒" means "to have a fever."
Here, '發燒' literally means 'to have a fever,' suggesting a physical condition.
我覺得自己好像發燒了。
I feel like I might have a fever.
In this context, '發燒' is metaphorically used to mean 'having strong enthusiasm or passion for something.'
他對音樂越來越發燒,甚至開始創作歌曲。
He is increasingly passionate about music, even starting to compose songs.
'發燒友' incorporates '發燒' to describe enthusiasts who are deeply engaged in their interests or hobbies.