Unless you're involved with thinking about what you're doing, you end up doing the same thing over and over, and that becomes tedious and, in the end, defeating. ↗
It's tedious to watch something very obvious being worked out, like a movie that's not particularly good and after about half an hour you know how it's going to end. ↗
I think it has something to do with being British. We don't take ourselves as seriously as some other countries do. I think a lot of people take themselves far too seriously; I find that a very tedious attitude. ↗
I bear solemn witness to the fact that NATO heads of state and of government meet only to go through the tedious motions of reading speeches, drafted by others, with the principal objective of not rocking the boat. ↗