- 1繁重的、沉重的（工作、責任）
When work or a duty is onerous, it is not just hard. It sits on you like a heavy bag. It makes you tired, and it makes you worry. People use it for big jobs you cannot easily put down: caring for a sick parent, filling in long forms, a tax that is too high, extra rules a small shop must follow.
It is a rather formal word. You will meet it in news, in law, and in serious talk about jobs. Friends at a café would more often say "It's a lot" or "It's too much." You would not call a difficult game onerous.
Though actually, speakers stretch it. Some people call a small extra task onerous when they only mean it is . In contracts, the word is colder: onerous terms put a real burden on you. Say it ON-uh-russ. It is not related to honour, even though the start can look a little like it.
組成From Latin onus ("burden") + -ōsus ("full of"). English got it through French: Latin onerosus → Old French onereus → Middle French onereux → Middle English onerous.
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。
onerousadj/ˈɒnəɹəs/
- 1
Imposing or constituting a physical, mental, or figurative load which can be borne only with effort; burdensome.
- That all this might not be too onerous on the purses of his rustic patrons, who are apt to consider the costs of schooling a grievous burden, and schoolmasters as mere drones, he had various ways of rendering himself both useful and agreeable.
- Again, and more intensely than ever, she desired a fixed occupation,—no matter how onerous, how irksome.
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。