I agree, eta ~ to me snobs often seem inordinately proud of their social pretensions.

My working definition woudl be a person who is so preoccupied with the appearance of social eminence that they disdain all those they perceive as below them in the pecking order and fawn on those they perceive as above them. I suspect google would come back from the well with a full (Hyacinth) Bouquet. :)