下定的選擇
這是核心畫面本身：把好幾個選項砍到只剩一個，那「砍完之後剩下的那一個」就是你的 decision。
a choice made · noun · B1
A choice you make after thinking about it or talking it over.
決定
核心畫面
You can picture decision as the moment a fork in the road becomes a single chosen path: many options were open, you weighed them, and then you cut them down to one. The Latin root 'decidere' literally means 'to cut off' — once you decide, the other roads are cut away.
可以想成站在岔路口的那一刻：本來有好幾條路都開著，你權衡了一下，最後把它們砍到只剩一條。拉丁字根 decidere …更多收起
可以想成站在岔路口的那一刻：本來有好幾條路都開著，你權衡了一下，最後把它們砍到只剩一條。拉丁字根 decidere 的意思就是「切掉」——一旦你下了 decision，其他的選項就被切斷、不再考慮了。所有的用法都從這個「砍到只剩一個」的畫面長出來。From the word’s history
From Latin 'decidere', 'to cut off / cut down', from 'de-' (off) + 'caedere' (to cut) — choosing is cutting the other options away.
源自拉丁文 decidere「切掉、砍下」，由 de-（離開）＋ caedere（切）組成——做選擇就是把其他選項切掉。
Online Etymology Dictionary (etymonline.com), 'decision'
Three branches
敢砍的性格
如果一個人很會、也很敢「砍掉其他選項」——很快就能選定、不拖泥帶水——那這種「乾脆切下去」的能力本身，就被叫做 decision。從「切的動作」延伸到「擅長切的特質」。
decisiveness · noun · B1
The quality of being able to choose quickly and with confidence.
果斷
官方裁定
當「砍到只剩一個」的這個動作是由有權力的人或機構正式做出的，它就帶有官方效力：法官、委員會替大家把選項切定。所以同一個「切定」的畫面，放到正式場合就成了「裁決」與「裁決權」。
official power to decide · noun · B1
The act or power of deciding something officially.
裁決權
原始詞典資料6 筆記錄
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。
decisionnoun/dɪˈsɪʒn̩/
- 1
The act of deciding.
- 2
A choice or judgement.
- It is the decision of the court that movies are protected as free speech.
- His life has always been filled with big decisions.
- 3
Firmness of conviction.
- After agonizing deliberations, they finally proceeded with decision.
- 4
A result arrived at by the judges when there is no clear winner at the end of the contest.
- He has won twice by knockout, once by decision.
- 5
ball-gamesbaseballgamesA win or a loss awarded to a pitcher.
decisionverb/dɪˈsɪʒn̩/
- 1
boxinggovernmenthobbiesTo defeat an opponent by a decision of the judges, rather than by a knockout
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。