What It Scores
RESIDUA is a valid word in the tournament list this site uses. Tile values only, before any premium square: 8 in Scrabble and 9 in Words With Friends. The letters break down as R1 E1 S1 I1 D2 U1 A1.
At seven letters this plays a whole rack, which is a bingo and worth 58 in Scrabble once the 50 point bonus lands.
Words Made From The Letters In RESIDUA
206 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 (46)
ADIEUAESIRAIDERAIDESAIREDARISEASIDEAUREIAURESAURISDARESDARISDAURSDEAIRDEARSDRIESDRUSEDUARSDURASDURESEARDSIDEASIRADERAIDSRAISERASEDREADSREDIARESIDRIADSRIDESRUDASRUDESRUDIERUEDASAREDSERAISIDERSIEURSIREDSUREDURAEIURASEUREASURSAEURSID
4 letter words (76)
AIDEAIDSAIRSARDSAREDARESARIDARISDAESDAISDAREDARIDAURDEARDESIDEUSDIESDIREDISADUARDUESDURADUREEARDEARSEAUSERASIDEAIDESIREDIRESIURERADERADSRAIDRAISRASEREADREDSREISRIADRIASRIDERIDSRISERUDERUDSRUEDRUESRUSARUSESADESADISAIDSAIRSARDSARISEARSEIRSERASIDASIDESIRESUEDSUERSUIDSURASURDSUREURDEURDSUREAURESURSAUSEDUSER
3 letter words (53)
ADSAIDAIRAISARDAREARSAUEDAEDASDEIDIEDISDUEDUIEAREASEAUEDSERAERSIDEIDSIRERADRAIRASREDREIRESRIARIDRUDRUESADSAESAISARSAUSEASEDSEISERSIRSRISUDSUESUISURUDSURDUREUSE
2 letter words (18)
Next: the Word Unscrambler for any letters at all. Full entry and definition at Merriam-Webster.