The expression "Wei-Wu-Wei" is usually translated as non-action, in the sense I think Vivekananda used in his phrase "actionless-action." But it appears there are other meanings attributed to this phrase. One is the power acquired through meditation when it reaches the trance state--presumably mystical or occult power, but also ordinary power, in relation with other humans and animals. A further meaning attributed to it is stilling of the mind. And finally: the sage does nothing yet achieves everything (this meaning I believe is from Lao Tzu).
-- Notebooks Category 15: The Orient > Chapter 3: China, Japan, Tibet > # 59