verb (used with object)
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to communicate with (a person) or search for information about (a person) by using Facebook.
My old girlfriend just facebooked me.
His future employer Facebooked him and decided to withdraw the job offer.
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to post on Facebook.
I facebooked some photos of my cat.
You should Facebook the event so more people will show up.
verb (used without object)
noun
verb
Spelling
The official trademarked name of the social media platform and website is now styled in all capital letters “FACEBOOK,” though prior to 2020 the trademarked style was “facebook,” in all lowercase letters. Formal writing—as exemplified by most news and book publishers—treats such names as regular proper nouns, in this case “Facebook,” using an initial capital letter, but not all caps. However, when a trade name begins with a lowercase letter followed by an uppercase one, such as eBay or iPad, this spelling is retained, even at the beginning of a sentence.
Etymology
Origin of Facebook
First recorded in 2000–05; from facebook, a college student directory with personal photos and basic information
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.
Kushner’s hard work got him into Harvard, but just as he entered in 2004, Mark Zuckerberg famously decided to drop out to build what would become Facebook.
From Los Angeles Times ● Aug. 30, 2026
Following the experience, Ffion posted on Facebook to remind her followers that she is "strictly professional".
From BBC ● Aug. 30, 2026
Mark Zuckerberg built Facebook on a “move fast and break things” motto that allowed for course corrections after missteps.
From The Wall Street Journal ● Aug. 29, 2026
Despite this, the name has been absolutely blanketed across social media: TikTok, Facebook, YouTube, Threads, even Pinterest.
From Slate ● Aug. 28, 2026
“Oh, that’s weird,” Libby says, “because Jordan Rylance posted something on Facebook that he has a callback for Elliott tomorrow, and the whole world Liked it. As if he already got the part or whatever.”
From "Better Nate Than Ever" by Tim Federle
Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.
