The crossword solution for the term 'STOPPED SUDDENLY, AS AN ENGINE' is 'STALLED' (7 letters). Stalling is a common problem in engines, and it occurs when the engine suddenly stops running due to a lack of fuel or air. This can happen when the engine is overloaded, or when the fuel mixture is incorrect. It can also be caused by a faulty spark plug or other mechanical issue. When an engine stalls, it must be restarted in order to continue running.