What It Scores
JUD is a valid word in the tournament list this site uses. Tile values only, before any premium square: 11 in Scrabble and 14 in Words With Friends. The letters break down as J8 U1 D2.
Longer Words Containing JUD
JUD appears inside each of these, which is what makes it worth knowing as a hook.
Next: the Word Unscrambler for any letters at all, and the two and three letter lists. Full entry and definition at Merriam-Webster.