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Synonyms

unofficial

British  
/ ˌʌnəˈfɪʃəl /

adjective

  1. not official or formal

    an unofficial engagement

  2. not confirmed officially

    an unofficial report

  3. (of a strike) not approved by the strikers' trade union

  4. (of a medicinal drug) not listed in a pharmacopoeia

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Other Word Forms

  • unofficially adverb

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

For many fans, Major League Baseball’s opening day is somewhat of an unofficial holiday.

From Los Angeles Times

White House spokeswoman Anna Kelly told MarketWatch that all announcements regarding troop deployments will come from the Department of War, referring to the unofficial name that the Pentagon has revived for the Defense Department.

From MarketWatch

Some inside the company described the atmosphere as reminiscent of the company’s early days, when its name was still Facebook and its unofficial internal motto was “move fast and break things.”

From The Wall Street Journal

The title takes its name from a folk song about longing and separation that is often dubbed South Korea's unofficial national anthem.

From Barron's

Beginning with "Body to Body" and ending with "Into the Sun", the 14-track "ARIRANG" album takes its name from a folk song about longing and separation that is often dubbed South Korea's unofficial national anthem.

From Barron's