[v] be idle; exist in a changeless situation; "The old man sat and stagnated on his porch"; "He slugged in bed all morning"
[v] cease to flow; stand without moving; "Stagnating waters"; "blood stagnates in the capillaries"
[v] cause to stagnate; "There are marshes that stagnate the waters"
[v] stand still; "Industry will stagnate if we do not stimulate our economy"