The word abbreviators 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: (60 words)
abaters, abators, aborter, abraser, abreast, aerator, airbase, airboat, arabise, arbiter, arrives, artsier, atresia, aviates, aviator, babiest, baiters, barbers, barbies, barista, barites, barters, boaster, boaters, borates, braiser, brasier, bravest, bravoes, bribers, obverts, obviate, orbiter, ovaries, overbit, oversat, oversit, rabbets, rabbits, rarebit, rebaits, reboast, reroast, rioters, roaster, robbers, roister, savorer, serovar, sorbate, sorbite, stabber, starver, striver, tabbies, tarries, variate, veritas, vibrate, vibrato