What is another word for in-erasable?
Pronunciation: [ɪnɪɹˈe͡ɪzəbə͡l] (IPA) 
When something is said to be 'in-erasable', it means that it cannot be erased or eliminated. Some synonyms for this word include indelible, permanent, fixed, enduring, and non-removable. These words imply that the thing or event in question is inextricably bound to one's memory or history - like indelible ink on paper. In-erasable things can be either positive or negative - a fond childhood memory, for example, can be just as in-erasable as a traumatic experience.
Sometimes, people use the phrase 'written in stone' as a synonym for 'in-erasable'. This connotes something that is unchangeable, like an engraved epitaph or a proverb that has become part of a culture's folklore. Whatever the context, the word 'in-erasable' implies a certain gravity and weight to whatever it is being used to describe.
