sign-in
noun
an act, an instance, or a time of signing in.
sign-in
American
[sahyn-in]
/ ˈsaɪnˌɪn /
noun
sign in
British
verb
-
to sign or cause to sign a register, as at a hotel, club, etc
-
to make or become a member, as of a club
sign in
Idioms
Etymology
Origin of sign-in
First recorded in 1945–50; noun use of verb phrase sign in
Compare meaning
How does sign-in compare to similar and commonly confused words? Explore the most common comparisons:
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.
See Examples For:
We shouldn’t have to sign-in every time we fire up the laptop and other devices.
From The Wall Street Journal ● Apr. 15, 2026
It provides a single sign-in portal that verifies and grants appropriate access to various programs.
From Barron's ● Feb. 5, 2026
“It’s crucial that recording is done properly,” he said, adding that sign-in failures by a known absconder needed to be logged and passed back to the probation officer.
From BBC ● May 23, 2024
At their most recent park gathering, Bibat and Daniel brought three boxes of Colorado Donuts and two cartons of Starbucks coffee to the park along with name tags, markers and a sign-in book.
From Los Angeles Times ● Mar. 21, 2024
She turns the sign-in screen in my direction.
From "Merci Suárez Changes Gears" by Meg Medina
For Trump, the most prominent earth sign in his work orbit may be White House chief of staff Susie Wiles, a Taurus.
From The Wall Street Journal ● Jun. 13, 2026
Now, the large Radio Korea sign in big, white block letters is gone, with just a shadow of an imprint.
From Los Angeles Times ● Jun. 6, 2026
Iran probably won’t put a minus sign in front of U.S. growth figures this year, but that doesn’t mean American investors are free and clear.
From The Wall Street Journal ● May 6, 2026
"When I went to go into the building these three big burly security guys came forward. They said 'Yes - can we help you?' and I had to sign in on a screen."
From BBC ● Apr. 17, 2026
The appearance of the sign in the entrance hall had a marked effect upon the inhabitants of the castle.
From "Harry Potter And The Goblet Of Fire" by J. K. Rowling
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.
