Synonyms

sign-in

American

[sahyn-in] / ˈsaɪnˌɪn /

noun

an act, an instance, or a time of signing in.

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

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Record one's arrival by signing a register, as in He signed in both himself and his wife. [c. 1930] For the antonym, see sign out.

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:

sign-in vs. login

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.

It provides a single sign-in portal that verifies and grants appropriate access to various programs.

From Barron's

If one of your accounts offers you a new sign-in option called a passkey, be sure to enable it, as it will give you an alternate way to log in, one that doesn’t require typing in a password.

From The Wall Street Journal

She said electrical works were not permitted in council properties and that this was made clear to tenants “at several points” in the tenancy sign-in.

From BBC

One evening when Bullman was 20 minutes late, a junior member of staff – known as a residential worker – asked the Panorama reporter to falsify a sign-in so it appeared as though Bullman had arrived on time.

From BBC

“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

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023