Start with a body running a temperature: hot skin, restless hands, nothing quite settling. That is the whole of fevered in its plain sense, and every other use is that same heat put somewhere else. Move it onto a mood and you get a crowd or a conversation running too hot to hold still. Move it onto thinking and you get a head that produces things nobody else can see. One picture, three places to put it.
The supplied Wiktionary entry gives the formation plainly: fever plus the ending -ed, meaning marked by or carrying a fever. That is why the physical sense sits at the centre; the other uses are the same word pointed at a mood or a mind.
資料裡的 Wiktionary 條目把組成講得很清楚：fever 加上字尾 -ed，意思是「帶著發燒的」。所以身體的意思坐在中間。另外兩個用法是同一個字，只是指向情緒或腦袋。
Wiktionary entry supplied in this packet (source_ref kaikki:3f6f69a190036ae4:1102558236)
Two branches
身體真的在發燒
這一家就是核心畫面本身，沒有比喻。它放在名詞前面，可以形容人，也可以形容額頭、臉、手這些部位——部位版本的意思是「因為人在發燒所以很燙」。
adjective · B2
Having a fever, or hot and uncomfortable because of one. It can describe the person who is ill, or a part of the body such as the forehead, the face or the hands.
發燒的
像在發燒的情緒和腦袋
這一家把發燒的熱從身體搬出去。搬到情緒上，是人群和話語停不下來；再往裡搬一層到腦子裡，就是連內容都跟現實脫節了。兩者共用同一個判斷：溫度高過這件事該有的程度。
adjective · C1
Full of very strong excitement or worry, so that people, voices or talk feel hot, fast and not quite under control.
激動狂熱的
以下是外部詞典記錄的用法，原文照列，我們還沒有寫成教學內容。上面的說明才是我們自己寫的；有些用法可能上面已經講過了。
feveredadj
Affected by a fever; feverish.
Heated; impassioned; enthusiastic to the point of distraction.
這個拼法也被記錄為下列字的變化形：
資料來源：英文維基詞典 English Wiktionary（CC BY-SA 4.0）。 原文照列，未經改寫。