Circulating : move continuously or freely through a closed system or area. Prevalent : widespread in a particular area or at a particular time. Stagnant : (of a body of water or the atmosphere of a confined space) having no current or flow and often having an unpleasant smell as a consequence. Primitive : relating to, denoting, or preserving the character of an early stage in the evolutionary or historical development of something. Afloat : in general circulation; current.