The word oenologist 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: 14
Highest Scoring Words With Friends™ Play In The Letters oenologist
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Seven Letter Word Alert: (22 words)
elogist, eloigns, glisten, gooiest, legions, lingoes, lionets, longest, loonies, loosing, looting, lotions, oleosin, oolites, oolongs, singlet, soloing, sooting, stoolie, tingles, tooling, toonies