"Urgency, heart, 'want-to,' whatever. I don't know. We're lacking a lot of stuff right now," the defensive tackle said.
For the second consecutive home game, thousands of spectators headed to the exits early.
"The fans are losing interest. The more games we play, the fewer fans come. It's getting bad," Haynesworth said.
The Redskins are 2-5 despite having opened the season with an NFL-record six consecutive games against winless teams. Washington's two wins were by a combined five points over teams that both are currently 0-7, Tampa Bay and St. Louis.
Asked if he delivered a postgame speech in the locker room, Haynesworth replied: "You can say but so much. You've got to actually 'want to.' So once we get to that point -- where we 'want to' do something -- then we'll do something. But if we just keep going our separate ways, then we'll just keep getting slaughtered like we have."