What It Scores
IMPOSER is a valid word in the tournament list this site uses. Tile values only, before any premium square: 11 in Scrabble, 12 in Words With Friends, 12 in Wordfeud. The letters break down as I1 M3 P3 O1 S1 E1 R1.
At seven letters this plays the whole rack, which is a bingo and worth 61 in Scrabble once the 50 point bonus lands.
Anagrams of IMPOSER (2)
Same letters, different order. Any of these plays the same tiles for the same score.
Words Made From The Letters In IMPOSER
201 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 (15)
5 letter words (44)
EMIRSEPRISMERISMIRESMIROSMISERMOERSMOIREMOPERMOPESMORESMORSEOMERSOSIERPERISPERMSPIERSPOEMSPOISEPOMESPORESPOSERPREMSPRIESPRIMEPRIMOPRIMSPRISEPRISMPROEMPROMSPROSEREPOSRIEMSRIMESRIPESROMPSROPESSMORESPEIRSPERMSPIERSPIRESPORE
4 letter words (69)
EMIREMOSEPOSEROSIMPSIRESMERIMIPSMIREMIROMIRSMISEMISOMOERMOESMOPEMOPSMOREMORSMOSEOMEROPESORESPERIPERMPESOPIERPIESPIRSPISEPISOPOEMPOISPOMEPOMSPOREPOSEPREMPRIMPROMPROSREISREMSREOSREPOREPSRIEMRIMERIMSRIPERIPSRISERISPROESROMPROMSROPEROSESEIRSEMISIMPSIPESIRESMIRSOMESORESORISPIESPIM
3 letter words (53)
EMOEMSERMERSIMPIOSIREISMISOMESMIRMISMOEMOIMOPMORMOSOESOISOMSOPEOPSOREORSOSEPERPESPIEPIRPISPOIPOMPOSPREPROPSIREIREMREOREPRESRIMRIPROEROMSEISERSIMSIPSIRSOMSOPSRI
2 letter words (20)
Next: the full rack page for these seven tiles, and the Word Unscrambler for any letters at all. Full entry and definition at Merriam-Webster.