write in
In real, traceable use. Part of the curated seed collection; community review is coming.
Sense 1
Meaning · English
To write a letter to, e.g. a publication.
Where it’s used:
Used
American English
Examples
If you have any questions, you can write in to the following address.
Usage example from English Wiktionary (CC BY-SA 4.0, retrieved 2026-07-30)
Sources & notes
Adapted from English Wiktionary (CC BY-SA 4.0, retrieved 2026-07-30 via kaikki.org).
Sense 2
Meaning · English
To fill in something required, by writing.
Sources & notes
Adapted from English Wiktionary (CC BY-SA 4.0, retrieved 2026-07-30 via kaikki.org).
Sense 3
Meaning · English
To vote for a candidate not on the ballot by writing their name.
Sources & notes
Adapted from English Wiktionary (CC BY-SA 4.0, retrieved 2026-07-30 via kaikki.org).
Common questions
What does “write in” mean?
To write a letter to, e.g. a publication.
Is “write in” formal or informal?
No register label has been reviewed yet — treat it as neutral and check the usage notes above.