Word · Frequency #14470
sleepless
不眠的；睡不着的
核心释义
unable to sleep; without sleep
- 1.
缺乏睡眠的；不眠的。
Characterized by an absence of sleep: wakeful.
警觉的；警惕的；缺乏睡眠的；不眠的。；不睡眠的；睡不着的；不休息的
用法In use
After drinking too much coffee, I spent a sleepless night tossing and turning.
用法提示：此处 sleepless 作定语修饰 night，表示“不眠的、睡不着的”。
The mother lay sleepless in the dark, waiting for her son to come home.
用法提示：此处 sleepless 作表语，描述主语处于“睡不着”的状态。
He had a sleepless night before the final exam.
用法提示：此处 sleepless 作定语，强调整夜未眠。
be sleepless
主语通常为人，强调无法入睡的状态。
I was sleepless all night thinking about the exam.
我整夜睡不着，一直在想考试的事。
remain sleepless
强调持续保持清醒状态，较为正式。
相关词与表达Connections
搭配Collocations
- a sleepless night
- 不眠之夜
- After drinking too much coffee, I had a sleepless night.喝了太多咖啡后，我度过了一个不眠之夜。
- sleepless with worry
- 因担忧而失眠的
- She was sleepless with worry over the results.她因担心结果而失眠。
- sleepless hours
- 不眠的时光
- He spent sleepless hours finishing his thesis.他花费无数不眠的时光完成了论文。
- sleepless vigilance
- 警觉不懈的守护
- The night guards kept sleepless vigilance at the gate.夜班警卫在大门口保持警觉不懈的守护。
学习提示Learner notes
记忆技巧Memory Tip
联想：sleep（睡）+ less（无）＝无眠，即 sleepless（失眠的、不眠的）。
语境与语域Context & Register
语域：mixed 常见场景：everyday conversation、formal/literary writing 这个词比较中性，日常口语和书面语中都用；最常出现在“sleepless night”这类搭配里，表示一夜没睡或睡不着。表示“警觉的、不休息的”意思时，多用于较正式或文学化的表达，所以整体语体可按混合来处理。
发音与拼写Pronunciation & Spelling
All six words share the suffix -less and the unstressed syllable /ləs/, but none rhymes with sleepless /ˈsliːpləs/ or with one another: their stressed vowels differ (e.g. restless /ˈrɛstləs/, hopeless /ˈhoʊpləs/, useless /ˈjuːsləs/). Use them to compare the spelling pattern -less, not as rhymes.
用法优先级Usage priority
Collins 词频等级为 1，建议结合例句记忆，而不是只背中文释义。
Dictionary facts from ECDICT, WIKTIONARY.