unctuously (adverb)

1. In Greek mythology, the god Hermes was often depicted unctuously flattering the other gods for his own gain.

2. The protagonist in the romantic novel spoke unctuously to his lover, trying to win her heart.

3. The artist painted the subject with an unctuously smooth brushstroke, adding depth and texture to the artwork.

4. In the comic strip, the politician was drawn unctuously, portraying his insincere behavior and manipulative nature.