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.
In April, EU regulators found Meta was failing to keep under-13s off its Facebook and Instagram platforms in breach of the bloc's digital content rules.
From Barron's • Jun. 9, 2026
Financial planner Devin Carroll, who runs a Social Security group on Facebook, is worried that seeing projections for a reduction of benefits will scare people too much.
From MarketWatch • Jun. 9, 2026
“It’s the people’s lake,” said one commenter on Facebook.
From The Wall Street Journal • Jun. 9, 2026
In a video posted on Facebook he hit out at "government boys" who he said were "claiming glory for our efforts".
From BBC • Jun. 7, 2026
There are eight notification messages from people posting on the Facebook page she doesn’t even use anymore.
From "A Heart in a Body in the World" by Deb Caletti
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.
