Valid Scrabble Words?

I recently received the following comment via email about my previous scrabble victory post:

Joe, the photo is breathtaking…I wish I was there.

Uhm… scrabble. Do you guys use the rules??

Git?
Nu?
RE?
ED?

These aren’t scrabble qualifying words last time I checked.

Well, in truth my dear friend a quick check of the official online scrabble dictionary indicates that these are indeed valid words:

GIT
git gits \ n pl. -S a foolish person

NU
nu nus \ n pl. -S a Greek letter

RE
re res \ n pl. -S the second tone of the diatonic musical scale

ED
ed \ n pl. ED education


By the way, starting January 1st, Qi will be recognized as a valid word. I have no idea what it means, but it's worth a ton of points.