adjective
indelible
in-DEL-uh-bul/ɪnˈdeləbl/
Impossible to erase.
The ink mark appears indelible despite vigorous scrubbing.

Etymology
The pieces mean “not capable of being erased or destroyed.” Applied to memory, the same image describes an impression that cannot be blotted out.
In context
her kindness has left an indelible mark on those who have passed through these offices and the warmth which she is greeted by those individuals is testimony to the worth she has held and continues to hold in their estimation
More examples
- Her kindness made an indelible impression.
- The memory remained indelible.
- He wrote the label with indelible ink.
Forms
indelible · more indelible · most indelible
indelibly adverb — in a way that cannot be erased
Similar words
- permanent
- Permanent lasts indefinitely; indelible specifically resists erasure or forgetting.
- unforgettable
- Unforgettable concerns memory; indelible also applies to physical marks.