This is the 407th most frequent Japanese word.
だが
"However" or "but."
In this sentence, "だが" serves as a contrasting word, indicating a positive trait followed by a potential drawback.
この方法は簡単だが、正確さを欠いている可能性がある。
This method is simple, but it may lack accuracy.
The word "だが" is utilized here to set up a contrast between finding the opinion interesting and not completely agreeing with it.
彼の意見は面白いだが、全てに賛成というわけではない。
His opinion is interesting, but I do not entirely agree with everything.
Here, "だが" is used as a conjunction meaning "but," showing contrast between liking Sundays and not being able to relax on them when work is present.