Definition of "impressionistic"

impressionistic

adjective
comparative more impressionistic, superlative most impressionistic
1. Pertaining to or characterized by impressionism.
2. Based on subjective reactions or feelings; not systematically researched or arrived at.
  Quotations
  Also, it must be remembered that claims made by Kindersley and Goffin were impressionistic, as opposed to being based on modern linguistic data collection and analysis methods.
  2014, James Lambert, “Diachronic stability in Indian English lexis”, in World Englishes, page 124
3. Based on impression rather than reason or fact; based on trying to impress somebody rather than trying for accuracy.
4. Impressible.