Learner's definition of SNOB
someone who tends to criticize, reject, or ignore people who come from a lower social class, have less education, etc.
Most of the people in the club are snobs who look down on people who attended public schools.
Don't be such a snob.
food/wine/art snobs [=people who think they are better than other people because they know about fine food/art/wine]
an intellectual snob