Synonyms for Putter (same or very similar meaning)
WordNet sense 1 (the iron normally used on the putting green):
putting ironWordNet sense 2 (work lightly):
potterWordNet sense 3 (do random, unplanned work or activities or spend time idly):
monkey, tinker, mess around, monkey around, muck about, muck aroundWordNet sense 4 (move around aimlessly):
potter around, putter aroundFrom the ODE community, based on WordNetadd/edit