是 否

shì fǒudictionary entry

whether (or not) / if / is or isn't

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-d962a65938a41dbc. Source SHA-256: bbc4b27f26bee1a262f4d7939667a040c7857c7fc0200a2fa7a86d3352a09eae.

Original source entry:

是否是否 [shi4 fou3] /whether (or not)/if/is or isn't/

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.

是
shì
to be (followed by substantives only) / correct / right / true / (respectful acknowledgement of a command) very well / (adverb for emphatic assertion)
否
fǒu
to negate / to deny / not
pǐ
clogged / evil

Reference definitions from CC-CEDICT.