unastonishable
adjEtymology From un- + astonishable.
1
Incapable of astonishment.
- Flanking this were the sword Napoleon had worn at Lodi, and one of his little Mameluke sabers from Egypt. The unastonishable Alma smiled her set smile at these treasures[…]1966, Gerald Kersh, The angel and the cuckoo, page 308: