from The American Heritage® Dictionary of the English Language, 4th Edition
- adj. Not official: the unofficial election results.
- adj. Not acting officially: an unofficial adviser.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- adj. Not officially established.
- adj. Not acting with official authority.
- adj. Not listed in a national pharmacopeia &c.
from The Century Dictionary and Cyclopedia
- Not official; specifically, in medicine, not approved by an authoritative body.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- adj. not having official authority or sanction
- adj. not officially established
The foreign ministers, he says, have agreed to what he called an unofficial ceasefire, to allow in unarmed Indonesian military and civilian observers to enforce the ceasefire, and to hold further bilateral talks with Indonesian participation in the near future.
Must emphasise that the word "unofficial" in that quote.
In the past, you have been involved in conducting what you call unofficial conversations with Taiwan's NSC director, Mr. Ding Mou-shih.
The South African Police Union on Thursday criticised what it called the unofficial freezing of promotions within the force because of the integration former homeland officers.
No greater praise can be given than by those who use the Raven and this can be evidenced at the always excellent military website StrategyPage which reports that the Raven is winning what it terms the unofficial "Commando Olympics."
They authorized the use of torture, and some people were tortured to death in unofficial CIA prisons; no one got charged for those crimes.
Concerns of brandjacking and Twitter-squatting aside – and increasingly these concepts seem hugely over-simplified if not redundant – unofficial is often good if not better.
Our reader offers the following (in unofficial translation) taken from Katholiek Nieuwsblad (Catholic Weekly) in the Netherlands:
Initiative 1098 was defeated Tuesday by about 65 percent to 35 percent in unofficial returns.
A quick tally let us determine the most common ways the nickname was introduced: There were 907 references where it was called the "unofficial fifth major" and 546 cases where a writer said the event is "regarded" as the fifth major.
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