Someone who not only hates Christmas, but makes it miserable for everyone else. They may steal or valdalize your decorations that are outside your home, somehow steal your gifts, provoke the department store Santa, torcher kids waiting to see Santa or steal money from the bell ringers outside the stores. A grinch basically is as huggable as a cactus.
A grinch is a horrible person and makes you want to serve them a nice cup of hot chocolate with a lump of arsenic. Ebenezer Scrooge, in A Christmas Carol, is a good example.
by krock1dk November 25, 2009