Deleting a character in script mode

My question is in the title: how can I delete a character in script mode?
My character is called ‘Alexandra’ but I don’t know why when I type her name, Scrivener offers me ‘Alexan’ before ‘Alexandra’. So I’d just like get rid of the 1st one.

There are 2 places to store Autocomplete entries:

  1. Format / Scriptwriting / Script Settings. Select element Character & Dialogue, then go to tab Auto-Complete and check your entries. Add / Delete / Modify entries accordingly.

  2. Project / Project Settings / Auto-Complete List. But this list is not Character & Dialogue specific. You may want to check it anyway.