Yes. it has the idea of presenting some sort of façade so that people get the impression that things are better than they are.
Plagiarism- technically speaking, you should say that the definition is from that dictionary, and we do have to be careful to show that we respect copyright- the laws in some countries are draconian, so while an individual defintion is not of ay great importance, the general idea of referencing is. . And diseased/pestilent/out of place are not diplomatic phrases, so let's try to keep a handle on things before they escalate, please.
Student or Learner