What It Scores
YIRTH is a valid word in the tournament list this site uses. Tile values only, before any premium square: 11 in Scrabble and 11 in Words With Friends. The letters break down as Y4 I1 R1 T1 H4.
Words Made From The Letters In YIRTH
9 shorter words come out of these tiles. On a board that matters more than the long play, because a short word on a premium square often beats a long one on plain squares.
4 letter words (1)
3 letter words (5)
2 letter words (3)
Longer Words Containing YIRTH
YIRTH appears inside each of these, which is what makes it worth knowing as a hook.
Next: the Word Unscrambler for any letters at all. Full entry and definition at Merriam-Webster.