Despite an impressive start to the campaign, the Hornets have faltered in recent weeks and were stunned by Huddersfield Town in a 4-1 defeat at Vicarage Road this afternoon - their third consecutive loss in the Premier League.
The side were once again forced to play most of the match with 10 men when Troy Deeney saw red with just over half an hour played, following on from Marvin Zeegelaar's first-half dismissal at Burnley and Tom Cleverley's late ejection at Crystal Palace earlier this month.
"I cannot talk about the attitude of the players," Silva told Sky Sports News. "We react with 10 players. It is not a matter of attitude or commitment it is about the moments. We should do, must do better in situations.
"No [there is no discipline problem]. You know what happened with the red. I don't want to talk about officials. I am 100% happy with my job. The PL is 38 games, not only 10. We need to keep going and to work to take results in the next game. You need to react to bad moments.
"The result is bad for us. This moment what I can talk and what I want to talk is congratulations for our opponent. We need to keep working hard. The last two games we can't change but we can change the next. We analyse what we did. This is the moment to look forward and continue to work hard."
Next up for Watford is a trip to Brighton & Hove Albion next Saturday afternoon.