unctuously |
sycophantic |
As an adverb unctuously
is insincerely and excessively charming.
As an adjective sycophantic is
obsequious, flattering, toadying.
taxonomy |
unctuously |
As a noun taxonomy
is the science or the technique used to make a classification.
As an adverb unctuously is
insincerely and excessively charming.