The crossword solution for the term FIX, AS A FRESCO is 'RESTORE'. To RESTORE a fresco means to repair or renovate a painting or mural that has been painted onto a wall or ceiling. Frescoes are usually made with water-based paint on wet plaster, so they can be easily damaged over time. Restoring a fresco requires careful attention to detail and a great deal of skill in order to preserve the original artwork.