Ink That Is Impossible to Erase
This page is the CodyCross answer for the clue below from Greece, Group 677, Puzzle 2 (Venetian Fortresses).
Question is: Ink That Is Impossible to Erase
and the answer is: INDELIBLE
Word Meaning:
INDELIBLE — Having the quality of being difficult to delete, remove, wash away, blot out, or efface.
Definitions from Wiktionary.