The word trashiness is playable in Words With Friends™, no blanks required. Because it is longer than 7 letters, you would have to play off an existing word or do it in several moves.
Words With Friends™ Letter Score: 13
Highest Scoring Words With Friends™ Play In The Letters trashiness
:
Seven Letter Word Alert: (35 words)
anthers, antsier, arshine, arshins, ashiest, assents, asserts, hairnet, harness, hastens, hastier, hernias, hissers, inserts, instars, nastier, rashest, resists, restain, retains, retinas, sassier, satires, seitans, sestina, shiners, shrines, siestas, sinters, sisters, stainer, stashes, strains, tarnish, trashes