The word landlubbers 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: 22
Highest Scoring Words With Friends™ Plays In The Letters
Seven Letter Word Alert: (43 words)
abludes, alludes, allured, allures, asunder, barbell, barbels, barbule, baubles, bedaubs, bedlars, belauds, blander, blunder, blurbed, bundles, burbled, burbles, burdens, dabbers, dabbler, dabbles, daubers, drabble, dubbers, durable, enlards, landers, launder, laurels, nebular, nebulas, nubbled, nubbles, rubbles, rubella, slabbed, slander, snarled, snubbed, snubber, unbaled, unbales