"Often"

This is another question for my book, and comes from in-game dialogue. During the mission "Lost Legacy", while in the Tomb of Vahlok, a man named Tharstan is reading podiums. The language upon the podiums is, apparently, the dragon language.  One inscription reads:

"All men must die, often by their own means."

I was attempting to take this phrase--which was only spoken in game--and translate it to the written form for my book. In so doing, I was trying to find a solid word for "often". In my thinking this is an occurance which happens with short intervals of time between them. 'Mal' is short; 'tiid' is time...but I'm looking for something that might indicate that span of time in-between. Obviously, I considered looking for 'between', but it was not there. Any ideas?

Category: Translation