The word bathymeters 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: 21
Highest Scoring Words With Friends™ Play In The Letters bathymeters
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Seven Letter Word Alert: (39 words)
abetter, bathers, batters, battery, beaters, beermat, berates, besmear, betrays, betters, breathe, breaths, breathy, eyebars, eyebath, hamster, hatters, heaters, mastery, matters, rebates, rebathe, rebaths, reheats, remates, restate, retaste, reteams, shatter, sherbet, smatter, steamer, streamy, tethers, theater, theatre, thereat, thereby, threats