London, Feb 7: `Batman' star Christian Bale has finally apologised for his "inexcusable" expletive-laden rant.

On a phone call to the KROQ radio station in Los Angeles, the 35-year-old Welsh-born actor expressed his regret over the profanity-laden tirade against the director of photography on his film `Terminator Salvation'.

"It''s been a miserable week for me," the Telegraph quoted him as saying of the public reaction to the leaked audio recording.

"I know I have a pottymouth, everybody knows that now. I have no confusion whatsoever. I was out of order beyond belief ... I acted like a punk.

"I regret that and there is nobody that has heard that tape that has been hit harder by it (than me)," he added.

Bale''s "inexcusable" verbal assault had many criticising the actor, and even raised questions whether he had breached the acceptable boundaries of an "artistic temperament".

"I am embarrassed by it and I regret it," Bale said of his behaviour.

He blamed a "bad day", and the pressures of fame for his fury.

"One thing that has really disturbed me throughout this is I''m not familiar or comfortable with this notion of being a movie star. The thing that disturbs me so much is that I''ve heard a lot of people saying that I seem to think I''m better than anybody else," he said.

Although he claimed that the assertion could not be "further from the truth", Bale acknowledged that he'd been quite fortunate as an actor.

"I never forget that and that is why I put so much into what I do and I care so much about it. Sometimes that enthusiasm just goes awry," he said. (ANI)