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:
Those other cities are certainly watching: the recent information session’s sign-in sheet included officials in San Francisco, Boston and Chicago.
From The Wall Street Journal ● Aug. 24, 2026
It provides a single sign-in portal that verifies and grants appropriate access to various programs.
From Barron's ● Feb. 5, 2026
That can include the author's relationship with other online accounts, their sign-in activity, review history, and any unusual behaviour.
From BBC ● Jun. 12, 2023
It is very easy to create a fake webpage that looks exactly like the Chase sign-in page, but the underlying URL is usually a dead giveaway.
From Seattle Times ● Feb. 21, 2023
Pink and red streamers and a little Valentine’s Day banner decorate the sign-in desk, but if you’re coming in here to visit somebody, it’s hard to celebrate any holiday.
From "On the Come Up" by Angie Thomas
Anecdotally, I’ve seen just one Moulton sign in my neighborhood, which is in a more conservative part of Boston.
From Slate ● Sep. 1, 2026
The media and the money markets hung on his few public statements, and a sign in his office said simply, "the buck starts here".
From BBC ● Jun. 22, 2026
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
This week, she took down the Platner sign in their yard.
From The Wall Street Journal ● Jun. 6, 2026
I would think it’s just a house except it has a sign in the yard that says ADMISSIONS.
From "The Miscalculations of Lightning Girl" by Stacy McAnulty
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.
