assiduous

As the investigation spread across the globe, Ms Kierans said prosecutors realised McCartney had been "very assiduous about saving the images".

"Martyn is the most professional, assiduous, diligent police officer you will come across and he should never have been put in this position," he said.

“I just feel like that assiduous pursuit of some level of truth sets her apart from a lot of people.”

The irony of the term extension is that Disney, which pushed so hard to keep its own creations out of the public domain, is perhaps our most assiduous exploiter of, yes, the public domain.

That makes it awkward for others who may have been more assiduous in retaining only what they considered necessary for the public record and deleting everything else.