Is there any word to express "always new needs emerge"? Can renewable be sufficient for this? The context is something like "cannot satisfy the endless renewable needs", in an academic article.

  • No. Look up renewable in a dictionary. You will have to also look up a thesaurus to find a suitable word or phrase to mean "endlessly repeating/ recurring" such as perpetual.
    – Kris
    Nov 2 '13 at 12:03
  • 2
    If I understood the context correctly, I would suggest "ever changing". It's not a single word, but can be useful at times: "cannot satisfy the ever changing needs..."
    – some user
    Nov 2 '13 at 12:15
  • 1
    Depending on the exact context, the phrase "moving target" can express this idea. And something like "endlessly shifting goalposts" would work in the example you give.
    – starwed
    Nov 2 '13 at 20:07
  • If it is something like "an idea or situation that continuously changes as you are trying to deal with it", you have a moving target.
    – JLG
    Nov 3 '13 at 1:24
  • @JLG It's about something come with new needs after every time you satisfy its needs.
    – Hawk
    Nov 4 '13 at 3:59

You might consider describing them as evolving needs.

The idea of ongoing change is embedded in the word evolving, and the phrase already has some currency.

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