Picture something that serves no purpose at all — use + less, 'without use'. You hold it in your hand but it simply can't do the job it is meant for.
可以想成一個東西「派不上任何用場」的狀態：use（用處）加上 less（沒有），就是「沒有用」。拿在手上，它卻做不了它該做的事。
原始詞典資料4 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。
uselessadj/ˈjuːs.ləs/
- 1
Without use or the possibility to be used.
- This fork's prongs are bent. It's useless now.
- I'm all for opening new stations (Transport Scotland is planning another at East Linton, about halfway between Drem and Dunbar), but they are useless without a decent service.
- 2
Unhelpful, not useful; pointless (of an action).
- I think it's useless to keep this discussion going. It's like talking to a brick wall.
- I tried my best to make him quit smoking, but my efforts were useless. He now smokes six packs a day.
- 3
derogatoryGood-for-nothing; not dependable.
- Bill never mows the lawn, takes out the trash or anything. He's useless, but I love him anyways.
- 4
derogatoryOf a person, Unable to do well at a particular task or endeavor.
- My brother is useless at most computer games, but he is an awesome PS2 player.
- Why do you keep trying? You're obviously useless at it.
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。