Ten-man Tottenham condemned Nottingham Forest to a fifth Premier League defeat in six games as they underlined their top-four ambitions at the City Ground.
Richarlison's third goal in two games set Spurs on their way with the outstanding Dejan Kulusevski sealing victory for Ange Postecoglou's side who had Yves Bissouma sent off in the 70th minute.
The result moves fifth-placed Tottenham level on points with Manchester City, although the champions have played a game less.
Forest who sit 16th in the table, five points clear of the bottom three, have now won just once in their previous 13 matches in the English top flight, and the outcome of this contest is only likely to increase the pressure on boss Steve Cooper.