The word biserrate 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: 12
Highest Scoring Words With Friends™ Play In The Letters biserrate
:
Seven Letter Word Alert: (26 words)
aeriest, arbiter, artsier, baiters, barites, barters, bearers, beaters, berates, berries, braiser, brasier, rarebit, rearise, rebaits, rebater, rebates, rebites, retears, retires, retries, seriate, serrate, tarries, tearers, tearier