What It Scores
PETASUS is a valid word in the tournament list this site uses. Tile values only, before any premium square: 9 in Scrabble and 11 in Words With Friends. The letters break down as P3 E1 T1 A1 S1 U1 S1.
At seven letters this plays a whole rack, which is a bingo and worth 59 in Scrabble once the 50 point bonus lands.
Words Made From The Letters In PETASUS
165 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.
6 letter words (13)
5 letter words (39)
APSESASSETEASTSPASESPASSEPASTEPASTSPATESPATUSPAUSEPEATSPESTSPUSESSATESSAUTESAUTSSEATSSEPTASEPTSSETUPSPAESSPATESPATSSPEATSPETSSPUESSPUTASTAPSSTEPSSTUPASTUPESUETSSUPESTAPESTAPUSTASSETAUPETEPASUPSET
4 letter words (57)
APESAPSEAPTSASPSATESEASTEATSEAUSESTSETASPASEPASSPASTPATEPATSPATUPEASPEATPESTPETSPSSTPUSSPUTSSAPSSATESAUTSEASSEATSEPSSEPTSETASETSSPAESPASSPATSPETSPUESTAPSTEPSUESSUETSUPESUPSTAESTAPETAPSTAPUTASSTAUSTEASTEPATUPSUPASUPTAUSESUTASUTES
3 letter words (42)
APEAPTASPATEATSAUEEASEATEAUESSESTETAPASPATPEAPESPETPSTPUSPUTSAESAPSATSAUSEASETSPASUESUPSUSTAETAPTASTAUTEATESTUPUPSUSEUTAUTEUTS
2 letter words (14)
Next: the Word Unscrambler for any letters at all. Full entry and definition at Merriam-Webster.