A line that was moving smoothly and then just stops — no slowing down, no sign that the end was coming. Think of a road that suddenly ends at a cliff edge: one step you are walking, the next step there is nothing. `abruptly` is the adverb for that missing middle part — the ramp, the warning, the gentle slope that normally connects one state to the next simply is not there.
From the word’s history
From Latin abruptus, the past participle of abrumpere "to break off", built from ab- "away" + rumpere "to break" (the same rumpere behind rupture and interrupt). The literal picture is something snapped off rather than cut smoothly — which is exactly the missing-transition image the modern word carries.
來自拉丁文 abruptus，是 abrumpere（折斷、扯斷）的過去分詞，由 ab-（離開）+ rumpere（破、斷；rupture、interrupt 同源）組成。字面就是「被折斷的」——不是慢慢鋸開，而是啪一聲斷掉。這個「折斷」的畫面剛好就是今天 abruptly 的缺口感：中間那截不是慢慢收尾，是直接沒了。
Wiktionary etymology tree supplied with this entry (Latin abrumpō → abruptus → English abrupt + Middle English -ly)
登入就可以看每一支怎麼連回核心畫面。
原始詞典資料1 筆記錄
以下是外部詞典記錄的用法，摘錄並精簡格式，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。
abruptlyadv/əˈbɹʌp.li/
- 1
In an abrupt manner; without giving notice, or without the usual forms; suddenly; precipitously.
- The professor stopped her lecture abruptly when she noticed someone fall off their seat.
- After weeks of speculation and intracoalitional debate, the text of the compromise was released on Sept. 21. By Sept. 27, the coalition had fallen apart, with Manchin somewhat abruptly pulling what had become known as the side deal from a must-pass budget resolution.
摘錄自 英文維基詞典 English Wiktionary，已精簡格式；依 CC BY-SA 4.0 授權使用，改動後的內容同樣以此授權提供。