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深信不疑

shēn xìn bù yídictionary entry
DEFINITION CC-CEDICT
to believe firmly without any doubt (idiom) / absolute certainty about sth
Sources & editorial notes

Reference definitions: CC-CEDICT contributors and MDBG, CC BY-SA 4.0. Source release 2026-10-27T01:55:52Z. Imported 2026-10-27. Definition wording and meaning order are retained. Recognized pronunciation references are displayed with tone marks; the original source record is available below.

Source record: cd-8108c24e06e2b81a. Source SHA-256: bbc4b27f26bee1a262f4d7939667a040c7857c7fc0200a2fa7a86d3352a09eae.

Original source entry:

深信不疑 深信不疑 [shen1 xin4 bu4 yi2] /to believe firmly without any doubt (idiom)/absolute certainty about sth/

Reference definitions and teaching material have separate provenance.

Reference information

The definitions above are from CC-CEDICT. Examples and usage notes are available on selected entries.

Character information

View the individual characters. Their meanings do not necessarily explain the meaning of the whole word.

  • 深
    shēn

    (lit. and fig.) deep

  • 信
    xìn

    letter / mail / CL:封[fēng] / to trust / to believe / to profess faith in / truthful / confidence / trust / at will / at random

  • 不
    bù

    no; not so / (bound form) not; un-

  • 疑
    yí

    (bound form) to doubt; to suspect

Reference definitions from CC-CEDICT.