Bally

He's just a bally idiot.

Source: wiktionary

“My faith! It’ll be more bally corpse than bride, though, this journey.”

Source: wiktionary

“I dislike to frighten the ladies, sir,” he said, “but she can’t float a dozen minutes, in my opinion. There’s a hole in her you could drive a bally cow through, sir.”

Source: wiktionary

However, be that as it may and whether you liked the bally thing or didn't, the point was that it had vanished [...] It amazed me that I could have allowed myself to be let in for a binge of this description simply because a woman wished it. Too bally chivalrous for our own good, we Woosters, and always have been. [...] “When you hear me burst into song, you'll know there's peril afoot and you'll have plenty of time to nip out of the window.” “And break my bally neck?” [...] “Nothing can possibly go wrong.” “Just as you say, sir. But I still have that feeling.” The blood of the Woosters is hot, and I was about to tell him in set terms what I thought of his bally feeling, when I suddenly spotted what it was that was making him crab the act.

Source: wiktionary