Can you hear me, Grampo?

Grampo is a term I created.

Grampos are unintentional, written errors in grammar when the writer full well knows better. They often occur when one edits one portion of a sentence and then fails to proofread the edited sentence in full.

1. I write "I like the blue bird who is in my window."
2. I then edit to encompass all blue birds in my window.
3. I may end up with " I like all the blue birds who is in my window."

This subject-verb disagreement is a grampo.

Grampo is also the Portuguese translation of Griphook (the Gringotts' goblin) in the Brazilian edition of the Harry Potter series.