My new favorite word is zügig. I assume this word comes from the German word for train, zug, and thus means roughly, to be like a train. Translations of zügig include easy, efficient, free and uninterrupted.
I discovered this word in the context of someone touting his own work style in an application letter. What a nice metaphor! I could stand to be a lot more zügig myself. Could picturing a train help me get things done?