Serious in example sentence
I was raised around rugby all my life, it is a great game but I was never really taken to it because (please forgive me if I offend anyone, nothing personal this is just how I saw it) I thought, their trainings are not as ruthless or hard, the players are not as disciplined and don't seemed as serious like other sportmen and it looked like it's all just muscle and blooming tackling each other etc.