unimpressionable

English

Etymology

    From un- + impressionable.

    Adjective

    unimpressionable (comparative more unimpressionable, superlative most unimpressionable)

    1. Not impressionable.
      Synonyms: reserved, steadfast, unbending; see also Thesaurus:aloof
      • 1914, Ernest Bramah [pseudonym; Ernest Brammah Smith], Max Carrados:
        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.

    Derived terms