“非官方”用英语怎么说？

unofficial or non-official
official有官方人员的意思，non-official表示不是官方的人员

干吗老改？我也改unofficial / non-official

informal

unofficial or informal

non-government 例: non-government organization 非官方团体

unofficial / non-official

informal

private

in formal
slang
street talk

非官方
unofficial(ly)

非官方消息
news from unofficial sources

非官方报道
unofficial reports

非官方新闻(未经官方证实的).
Unofficial news,ie not confirmed by official sources or authorities