unofficially + verb
unofficially 修饰动词时，表示该动作并非通过官方渠道或正式声明完成。
The minister unofficially confirmed the reports.
部长非正式地证实了这些报道。
非正式地；非官方地
非正式地；以非官方方式。；非公认地；非正式地
in an unofficial manner; without official authorization
非正式地；以非官方方式。
In a way that is not official; in an unofficial manner.
She unofficially announced the results before the official press release.
她在官方新闻稿发布之前非正式地公布了结果。
用法提示：副词，修饰动词announced，表示非官方或非正式地。
The two companies have unofficially agreed to merge, but no contract has been signed yet.
两家公司已非正式地同意合并，但尚未签署合同。
用法提示：副词，修饰动词短语have agreed，表示非正式地。
He is unofficially the team captain, though the coach has not named him.
他非正式地担任队长，尽管教练尚未任命他。
用法提示：副词，修饰系表结构，表示非官方地。
unofficially 修饰动词时，表示该动作并非通过官方渠道或正式声明完成。
The minister unofficially confirmed the reports.
部长非正式地证实了这些报道。
被动结构中，unofficially 说明动作未走正式程序，常用于新闻或传闻语境。
The new policy has been unofficially approved.
新政策已被非正式地批准。
置于句首并加逗号时，表示“据非官方说法”，引出未经证实的信息。
Unofficially, the restaurant is owned by a famous chef.
据非官方说法，这家餐厅的老板是一位名厨。
informally 侧重轻松随意或私人场合，语气中性；unofficially 常隐含未经官方确认或授权的意味。
off the record 多用于媒体或交谈，表示不公开、不记录；unofficially 则不一定有不可引用的约定。
privately 强调个人或内部范围，可能仍按程序进行；unofficially 更常指缺乏官方身份或授权。
without authorization 明确指没有获得允许，语义较强；unofficially 可仅表示非正式，不一定违规。
grammar · medium
易错句子The results were unofficial released.
正确表达The results were unofficially released.
released 是动词，需要用副词 unofficially 修饰，而 unofficial 是形容词，只能修饰名词；不要受中文‘非官方地’中‘非官方’是形容词的影响。
grammar · medium
易错句子Inofficially, the company has announced a new product.
正确表达Unofficially, the company has announced a new product.
表示‘非正式地/非官方地’的副词是 unofficially，前缀是 un-，不是 in-；不要把 in- 和 un- 这两种否定前缀混用，这是常见的构词错误。
grammar · medium
易错句子Not officially, the meeting has been postponed.
正确表达Unofficially, the meeting has been postponed.
句首作评注性状语表示‘据非官方消息’，应用单个副词 unofficially；‘not officially’通常是否定句中的副词短语，不能直接放在句首引导这种评注。
本义项为“非正式地；非官方地”（未经官方授权），反义为 officially，强调经官方授权或正式程序；若表示“私下里、据传”则不是其直接反义。
unofficially 指未经官方授权或非官方渠道得知；informally 指方式随意、不拘礼节，强调场合或程序不正式。
officially 与 unofficially 是反义词，但拼写相近容易看错；表示“经由官方/正式宣布”时要用 officially，不能用 unofficially。
非正式确认
The news was unofficially confirmed by a staff member.
这一消息得到了工作人员的非正式确认。
非正式地被称为
The area is unofficially known as the city's art district.
该地区非正式地被称为这座城市的艺术区。
非正式报道
It was unofficially reported that the company would merge.
据非正式报道，这家公司将合并。
非正式提名
He has been unofficially named as the next team captain.
他被非正式地指定为下任队长。
非正式退役
Although he never announced it, he has unofficially retired from competition.
尽管他从未宣布，但他已经非正式地退出了比赛。
official + ly
artificial + ly
superficial + ly
beneficial + ly
especial + ly
special + ly
un-（不）+ official（官方的）+ -ly（副词后缀）；相关词：official, unofficial, officially, unhappy, quickly
unofficially 常修饰 announce，表示非正式地公布
unofficially 常与 report 连用，指未经官方确认的报道
unofficially 与 leak 搭配，指信息未经授权被透露
unofficially 修饰 confirm，表示非官方渠道证实
unofficially 常与 source 搭配，指不愿透露身份的知情人士
Dictionary facts from ECDICT, WIKTIONARY.