The word immunocompetence cannot be made in Words With Friends™. It is 16 letters long, too long to fit on a WordsWithFriends board (15 letters max).
Highest Scoring Words With Friends™ Play In The Letters immunocompetence
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Seven Letter Word Alert: (41 words)
coconut, cometic, comment, commune, commute, compete, compote, compute, conceit, concept, connect, connote, ectopic, eminent, emotion, epicene, epitome, eupneic, meconic, memento, memetic, mention, miocene, mountie, nepotic, nominee, noncute, nonepic, nonmute, omentum, oncotic, onetime, optimum, outcome, pentene, pimento, pinenut, pontine, poutine, umpteen, unction