1. happening at the beginning; first

1. the first letter of a name

1. to mark or sign with one’s initials

Examples

• The initial meeting went very well.
• Her initial reaction was surprise.
• Please write your initials at the bottom of each page.
• His initials are J.R.S.
• The teacher asked students to initial their homework.
• You need to initial the contract changes.
• The initial cost was higher than expected.