Word · CEFR B2 · Frequency #5651
unsuccessful
/ˌʌnsəkˈsesful/
adjective
不成功的；失败的
核心释义
Failed; not successful.
- 1.
失败的,不成功的。
Failed, not successful.
失败的,不成功的。；不成功的
用法In use
He made an unsuccessful attempt to open the locked door.
用法提示：此处 unsuccessful 是形容词，作定语修饰 attempt，意为“不成功的”。
The experiment was unsuccessful because the equipment failed.
用法提示：此处 unsuccessful 是形容词，作表语，表示“不成功的、失败的”。
The committee considered the negotiations unsuccessful and decided to try again.
用法提示：此处 unsuccessful 是形容词，作宾语补足语，表示“不成功的”。
unsuccessful in [noun/gerund]
She was unsuccessful in her attempt to fix the computer.
她修理电脑的尝试不成功。
unsuccessful [noun]
相关词与表达Connections
搭配Collocations
- unsuccessful attempt
- 不成功的尝试
- He made an unsuccessful attempt to climb the mountain.他尝试爬山，但没有成功。
- unsuccessful bid
- 竞标失败
- The company's unsuccessful bid for the contract was disappointing.这家公司竞标合同失败，令人失望。
- unsuccessful search
- 搜索无果
- After an unsuccessful search, they gave up looking for the lost key.经过一番搜索无果后，他们放弃了寻找丢失的钥匙。
- unsuccessful outcome
- 失败的结果
- The unsuccessful outcome of the experiment led to a new approach.实验失败的结果促使他们采用了新方法。
- unsuccessful candidate
学习提示Learner notes
记忆技巧Memory Tip
把un看作“不”，successful是“成功的”，合起来“不成功的”
语境与语域Context & Register
语域：neutral 常见场景：business、personal、academic、sports 本词为中性，可广泛应用于各类非正式及正式场合，表示未达到预期目标。
语法说明Grammar Note
常与in或at连用，表示在某方面失败
发音与拼写Pronunciation & Spelling
Only 'successful' rhymes with 'unsuccessful' (same stressed vowel /ɛ/ and ending). Other -ful words like 'beautiful', 'powerful', 'hopeful', and 'unhelpful' have different stress or vowels; they are spelling lookalikes.
高价值词汇High-value vocabulary
该词属于 Oxford 核心词汇，值得优先掌握常见搭配和句型。
用法优先级
Dictionary facts from ECDICT, WIKTIONARY.