Weary?

I'm translating some stuff at work beyond what I'm responsible for, so long days. I've been at it for ten hours already and I've got a couple more to go before I'll go home. I translated the word "kuribiskumas" thusly: creativeness. Word let it slide but I'm thinking, "that doesn't sound quite right...hmmm..." In the end I needed a thesaurus to remind me of the word I was looking for: creativity!