"Impressionistically" is an adverb that refers to the use of techniques popularized by Impressionist painters, such as loose brushwork and an emphasis on capturing the fleeting nature of light and color. Some synonyms for "impressionistically" include impressionally, evocatively, suggestively, suggestively, atmospherically, and poetically. These words convey a similar sense of conveying the essence or mood of a subject rather than strictly representing its physical form. They can be useful in art criticism, literature, or other contexts where a more subjective or emotional response is desired. Overall, using one of these synonyms can add subtle nuance to your writing and help capture the fleeting beauty of the world around us.