The highest scoring word in Words With Friends is UNADORNED with a total of 14 points.
Synonyms: unembellished, unornamented, undecorated, unelaborate, unvarnished, unfurnished, unpatterned, uncluttered, unostentatious, unfussy, no-nonsense, without frills, plain, penny plain, simple, basic, modest, restrained, straightforward