initial
🇺🇸
/ɪˈnɪʃl/
🇬🇧
/ɪˈnɪʃl/
first or at the start
My initial feeling was excitement when I heard the news.
the first letter of a name
The initial of my first name is M, which stands for Mary.
the first letters of all names
Please write your initials on the form to confirm your initial agreement.
to sign with your first letters
You need to initial each page to show your initial approval.