往外倒到不剩：揮霍
這一支就是核心畫面本身，而且是被責備的那一面：東西出去得太快，而且沒人在數。
adjective · C1
Spending money, or using up time and other things, in a careless way, without thinking about how fast it is all going.
揮霍的；浪費的
核心畫面
One way to hold prodigal: a pair of hands pushing things out and away, and never once stopping to count what is left. Watch the money go and the word sounds like a warning. Watch the same hands hand out praise, or a tree hand out fruit, and nothing is wrong at all — the pushing-out has simply landed on someone who is glad to catch it. The word itself does not choose between those two. The situation around it does.
prodigal 可以想成一雙手：東西一直往外推，從來沒有停下來數過還剩多少。看著錢這樣出去，這個字聽起來就像一句警…更多收起
prodigal 可以想成一雙手：東西一直往外推，從來沒有停下來數過還剩多少。看著錢這樣出去，這個字聽起來就像一句警告。可是同一雙手如果推出去的是稱讚，或是一棵樹推出去的是果實，那就一點問題都沒有——東西還是一直往外送，只是接到的人覺得幸運。這個字本身不替你選邊。選邊的是它周圍的情況。From the word’s history
Prodigal goes back through Late Latin prodigalis to Latin prodigus 'wasteful, lavish', from prodigo 'to drive forth, squander' — prod- (forward) plus ago (drive). The driving-forward is still the whole picture. The famous 'son who leaves and returns' meaning is a separate route: it comes by allusion to the parable in Luke 15:11-32.
prodigal 經由晚期拉丁文 prōdigālis 回到拉丁文 prōdigus（揮霍的、豐盛的），再往上是 prōdigō「往前趕出去」——prōd-（向前）加 agō（趕）。那個「往外趕」到今天還是整個字的畫面。至於有名的「離家又回頭的兒子」那個意思，走的是另一條路：它來自《路加福音》15:11–32 的典故。
Wiktionary entry for prodigal (adj), source_ref kaikki:3f6f69a190036ae4:608844297 — Latin etymology plus the explicit note that the abandonment/return senses are by allusion to Luke 15:11-32.
Three branches
往外倒到滿出來：慷慨
同一個往外倒的動作，換一個角度看。差別不在動作，在接到東西的人覺得可惜還是覺得幸運。
adjective · C2
Giving out or producing something very freely, in far larger amounts than are needed — usually with no blame attached. Often followed by of or with.
慷慨給予的；豐盛得滿出來的
走出去的那個人：浪子
這一支跟核心畫面相連，但不是直接長出來的。它繞過一個故事：故事裡的兒子先揮霍，可是英文今天用這個說法時，重點幾乎都落在他回來那一刻，而不是他花掉的錢。
adjective · C1
A prodigal son or a prodigal daughter is someone who left their family and home in a way the family did not agree with, and who is later sorry about it and comes back.
浪子；離家又回頭的兒女