The highest scoring word in Words With Friends is DAMPEN with a total of 14 points.
Synonyms: moisten, damp, wet, dew, water, irrigate, humidify
Synonyms: lessen, decrease, diminish, reduce, lower, moderate, damp, damp down, put a damper on, throw cold water on, calm, cool, chill, dull, blunt, tone down, deaden, temper, discourage