Spurs fought back from two goals down at White Hart Lane to record an important victory in their fight for European football.
Chadli now wants the squad to show more consistency during the coming weeks as they try to seal Champions League qualification.
"We showed great performance and character," the Belgian told the club's official website. "We have to keep going and continue to play like that, with passion, to fight for each other and we'll be okay."
Tottenham continue their Premier League campaign on Saturday when they travel to Liverpool.