The word inevitables 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: 20
Highest Scoring Words With Friends™ Play In The Letters inevitables
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Seven Letter Word Alert: (33 words)
albites, alibies, astilbe, baleens, beanies, beslave, elastin, elative, enables, enslave, entails, estival, evilest, ilvaite, invitee, invites, lateens, leanest, leavens, lenites, lesbian, libates, lineate, nailset, naivest, natives, salient, tenable, tensile, vainest, veinlet, vinelet, visible