The word foreignness 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: 18
Highest Scoring Words With Friends™ Play In The Letters
Seven Letter Word Alert: (33 words)
engines, engross, ensigns, feesing, feigner, finesse, fingers, foreign, forseen, freeing, fringes, genesis, greisen, ignores, inferno, ingress, negroes, nonfire, nonfree, oneness, reefing, refines, regions, resigns, seniors, sensing, signees, signers, signors, singers, sinners, snoring, soirees