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
“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
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
He nods, and with that, she pulls out a printout of a sign-in sheet and lays it down in front of me.
From "Merci Suárez Changes Gears" by Meg Medina
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
Green’s sign in it reads: Stop to laugh at the scam.
From Los Angeles Times ● Aug. 26, 2026
Among all the discourse sparked by a “No Influencers” sign in a Nantucket store, one question cuts through: “Does hating influencers mean hating women?”
From The Wall Street Journal ● Aug. 4, 2026
The Minions restage the most famous stunts of Harold Lloyd and Buster Keaton and provide an alternative history of how the famous Hollywoodland sign in the hills got shortened to Hollywood.
From The Wall Street Journal ● Jul. 1, 2026
“You’ll have to sign in at the off!—”
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.
