I. -sh(ə)nə̇st noun
( -s )
Etymology: French impressionniste, from impression + -iste -ist
: an adherent or follower of impressionism ; specifically usually capitalized : a member of a group of artists in France who exhibited together between 1874 and 1886 and many of whom practiced impressionism in their painting
I. noun
: an entertainer who does impressions of noted personalities