indelibly (adverb)

1. The magic spell was indelibly engraved in the ancient book of spells.

2. The signing of the Declaration of Independence is indelibly etched in the collective memory of the American people.

3. The mischievous character with his signature catchphrase has indelibly become a beloved icon of animated cartoons.

4. The couple's first dance at their wedding was a moment indelibly etched in their hearts forever.