Source : Webster's Revised Unabridged Dictionary (1913)

Stagnancy \Stag"nan*cy\, n.
   State of being stagnant.

Source : WordNet®

stagnancy
     n 1: inactivity of liquids; being stagnant; standing still;
          without current or circulation [syn: {stagnation}]
     2: a state of inactivity (in business or art etc); "economic
        growth of less than 1% per year is considered to be
        economic stagnation" [syn: {stagnation}, {doldrums}]