Ange Postecoglou dismissed the notion that he is angry at recent questioning of his tactics but says he is tired of people trying to "poke the bear".
Tottenham's tactics were criticised after Sunday's 6-3 loss at home to Liverpool, with Sky Sports pundit Jamie Carragher saying after the result that "nobody has ever won anything playing like that".
Please use Chrome browser for a more accessible video player
But Postecoglou said his reaction was normal given the nature of a defeat that saw Spurs concede six goals at home for only the second time in Premier League history.
"I wasn't angry. We'd just had a heavy defeat and I take responsibility for that, because I have seen the effect that has on everyone involved at the football club, so that sort of weighs heavily on you," Postecoglou said.
Please use Chrome browser for a more accessible video player
"But I don't think there are many managers that bounce into interviews after being beaten feel sort of cheery about it.
"Fair to say I am getting tired of the same questions and answering the same way.
"I just think it's almost like people sort of want to poke the bear to see if I react. Obviously after a loss it's a lot easier for people to get a reaction out of you."
Despite a stunning recent victory against Manchester City, Tottenham have lost three of their last five Premier League games and have a long list of injury absentees that includes Guglielmo Vicario, Cristian Romero and Micky van de Ven.
Please use Chrome browser for a more accessible video player
But Postecoglou has refused to be critical of the threadbare squad he has at his disposal.
"I can't be critical of this group of players at the moment in any sense," he said.
"I think it would be unfair for anyone to because what they are doing is giving absolute maximum effort.
Please use Chrome browser for a more accessible video player
"That's backed up by the physical parameters you put against what they're doing. They're trying to do it in the way that I'm asking them to.
"So how can I be critical of that? I think that would be hypocritical of me. The players are doing their part. They're doing it to the maximum of their ability and it's a credit to them.
"I still think in the long term that's going to hold us in good stead."
Nuno braced for the unknown against Spurs
Please use Chrome browser for a more accessible video player
Nottingham Forest boss Nuno Espirito Santo has braced himself for the unknown as his side prepares for Tottenham's visit.
Spurs have built a reputation for being the Premier League's biggest entertainers throughout this season, having scored the most goals out of any team with 39, but have only kept four clean sheets.
Fourth-placed Forest go into the match in fine fettle off the back of three successive wins and were the first club to stop Brentford from scoring on their own patch so far this season.
Asked what he thought could happen on Thursday, Nuno said: "You never know what's going to happen in the game.
"What we can see is good players, a lot of goals, also conceding goals. We analysed yesterday, it was different in terms of goals and situations.
"The result was a little bit unexpected but what we are preparing is a new game, new situations will happen and we are facing a very good game."