stagnate

(verb) stand still. Example: "Industry will stagnate if we do not stimulate our economy."

(verb) cause to stagnate. Example: "There are marshes that stagnate the waters."

(verb) cease to flow; stand without moving. Examples: "Stagnating waters." "Blood stagnates in the capillaries."

(verb) be idle; exist in a changeless situation. Synonyms: idle, laze, slug. Examples: "The old man sat and stagnated on his porch." "He slugged in bed all morning."