The word bacterises 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: 16
Highest Scoring Words With Friends™ Plays In The Letters bacterises
:
Seven Letter Word Alert: (38 words)
abscise, actress, aeriest, ascites, ascribe, baiters, barites, basters, beaters, berates, bisects, braises, breasts, casters, cerates, cerises, creases, creates, cresset, cristae, easiest, raciest, racists, rebaits, rebases, rebates, rebites, recasts, recites, reseats, resects, satires, scabies, scribes, seaters, secrets, seriate, teasers