Synonyms for Unvarnished (same or very similar meaning)
WordNet sense 1 (not having a coating of stain or varnish):
unstainedWordNet sense 2 (not having a coat of paint or badly in need of a fresh coat):
unpaintedWordNet sense 3 (free from any effort to soften to disguise):
plainWordNet sense 4 (extended senses; direct in means or manner or behavior or language or action):
directFrom the ODE community, based on WordNetadd/edit