unimpressionable

/ˌʌnɪmˈprɛʃənəbəl/
adjective
  1. Not easily influenced or affected by others; not impressionable.
    • The jury seemed unimpressionable, sticking to the facts despite emotional testimony.
    • Even as a child, she was unimpressionable and made her own decisions.
    • His unimpressionable nature made him resistant to peer pressure.
What does "unimpressionable" mean? | whatsthatwordmean | whatsthatwordmean