gadabout \GAD-uh-bout\, noun:
Someone who roams about in search of amusement or social activity.
In his unorthodox and callow way, he frequently upset and annoyed his countrymen, but they continued to vote for him, perhaps taking a vicarious pleasure in being led by such a world-famous gadabout.
-- "Milestones of 2000", Times (London), December 29, 2000
She hugged him fiercely. "Oh, I love you, Jake Grafton, you worthless gadabout fly-boy, you fool that sails away and leaves me."
-- Jack Anderson, Control
Mr. Hart-Davis, as befits a professional literary man, is something of a gadabout.
-- Daphne Merkin, "From Two Most English Men", New York Times, June 23, 1985
Gadabout is formed from the verb gad, "to rove or go about without purpose or restlessly" (from Middle English gadden, "to hurry") + about.