Fetching details from the dictionary...
but; however; although
行きいきたい、だけど今日きょうは無理むりだ。
I want to go, but I can't.
高いたかい、だけどどうしても買いかいたいな。
It's expensive, but I want to buy it.
寒かっさむかった、だけどスキーは楽しかったのしかった。
It was cold, but it was fun.