One who adheres to the theory or method of impressionism, so called.
For an Impressionist to paint from nature is not to paint the subject, but to realize sensations. Paul Cezanne
I am an anarchist in politics and an impressionist in art as well as a symbolist in literature. Not that I understand what these terms mean, but I take them to be all merely synonyms of pessimist. Henry Adams
I went out with a promiscuous impressionist - she did everybody. Jay London
I don't know if I'm an impressionist or an expressionist. You can call me an American first... I've been labeled doing neimanism, so that's what it is, I guess. LeRoy Neiman