Longman Dictionary of Contemporary English - impressionable

~ adj easy to influence, especially because you are young  (at an impressionable age)  (It's damaging to criticize kids when they're at an impressionable age.) - impressionability n impressionism ~ n 1 a style of painting used especially in France in the 19th century which uses colour instead of details of form to produce effects of light or feeling 2 a style of music from the late 19th and early 20th centuries that produces feelings and images by the quality of sounds rather than by a pattern of notes - impressionist adj  (impressionist painters)