unimpressionable
adjEtymology From un- + impressionable.
1
Not impressionable.
- Creake, in accordance with some detail of his never-revealed plan, continued to shower missile after missile against the panes until even the unimpressionable Parkinson shivered.1914, Ernest Bramah, Max Carrados:
- Derived terms
- unimpressionableness, unimpressionably