un-

prefix
🔊/ʌn/
🔊/ʌn/
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  1. (in adjectives, adverbs and nouns构成形容词、副词和名词) not; the opposite of不;未;非;反
    • unable不能
    • unconsciously无意识地
    • untruth虚假
  2. (in verbs that describe the opposite of a process构成表示相反过程的动词)
    • unlock开锁
    • undo解开