uninfluenced

From un- +‎ influenced.

uninfluenced (comparative more uninfluenced, superlative most uninfluenced)

1. Not influenced.
   • 1912, Arthur Conan Doyle, The Lost World […], London; New York, N.Y.: Hodder and Stoughton, →OCLC:

     His tall, gaunt, stringy figure is insensible to fatigue, and his dry, half-sarcastic, and often wholly unsympathetic manner is uninfluenced by any change in his surroundings.