Something you already had has drained away, and now it is coming back — slowly, with rest and time. Think of a person after a fever: not the moment they are declared well, but the quiet week in between, sleeping and eating and walking a little further each day. Every use of recuperate keeps that shape. What drains away changes — strength, money, a relationship, a way of thinking — and so does who is doing the work, but it is always a return of something that was yours before.
From the word’s history
Wiktionary records it as borrowed from Latin recuperare, an alternative form of reciperare, meaning to get again or regain, and calls it a doublet of recover. The Latin sense is already the core: something comes back to you.
Wiktionary 記載這個字借自拉丁文 recuperāre（reciperāre 的異體），意思是「重新取得、拿回來」，並指出它跟 recover 是同源的兩個字。拉丁文那個意思本身就是核心畫面：有東西回到你手上。這也解釋了為什麼健康、金錢、關係都能用同一個字。
Wiktionary entry for recuperate (kaikki extract, source_ref kaikki:3f6f69a190036ae4:209683434), etymology_text supplied in this packet
登入就可以看每一支怎麼連回核心畫面。