The word flavoursome 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: 23
Highest Scoring Words With Friends™ Play In The Letters
Seven Letter Word Alert: (38 words)
aerosol, amorous, armfuls, armsful, earfuls, emulsor, favours, femoral, femural, flamers, flavors, flavour, foamers, formals, formula, foveola, fulsome, loafers, louvers, louvres, marvels, maulers, morales, morulas, ourself, refusal, removal, roomful, roseola, searoom, serumal, urosome, valuers, vamoose, varooms, vaseful, velours, volumes