prefix / adverb / verb HSK 4
fēi
non- · not · to be not · wrong · to oppose

Meaning

is a classical Chinese negation that means 'not' or 'non-'. In modern Mandarin, it appears primarily as a prefix to create formal negations (like 法 'illegal') or in literary expressions. As a standalone word, it's quite formal and archaic, though it survives in certain fixed phrases and chengyu.

Usage

In everyday speech, is rarely used alone; speakers prefer 不 or 没. However, is extremely common as a prefix in formal, written, or technical vocabulary to mean 'non-' or 'un-'. It also appears in literary expressions like 常 (very) and philosophical contexts (是 = right and wrong). The standalone usage 'XY' (X is not Y) sounds classical or literary.

Examples

  1. 01
    这件事他不可。
    Zhè jiàn shì fēi bùkě.
    This matter must be handled by him (no one else will do).
  2. 02
    他并故意迟到的。
    bìngfēi gùyì chídào de.
    He really wasn't late on purpose.

Common collocations

  • ...不可
    fēi...bùkě
    must, have to
  • fēidàn
    not only
  • fēiděi
    must, have to
  • bìngfēi
    really not, actually not

Antonyms

Origin

The character originally depicted two wings flying in opposite directions, symbolizing opposition or contradiction. This visual metaphor extended to mean 'wrong' or 'not', representing things that go against each other.

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