Let's say I have an object such as a user account or some kind of certificate that is about to expire. What is the most idiomatic noun that describes the act to make it last longer and not expire?

I want to use it in an issue tracker in the ticket title, so my actual example "sentence" would be something like:

... of user account for service xyz

...where that user account is due to expire and its expiration date should be postponed. A complete sentence might be:

The ... of the user account was denied because the service has been superseded by [another].

The most suitable words I have found so far are "extension" and "prolongation". The examples from the Oxford Advanced Learner's Dictionary for both seem to fit (extend a contract, prolongation of human life). Although it sounds to me as if prolongation goes more with nouns that denote a time span, such as "life" and "holiday", rather than things that have an expiration date (I do not consider an account to denote a time span). On the other hand, "extension of a user account" sounds a bit strange to me (as a non-native speaker), as if I wanted additional privileges be granted to that account, or some other kind of upgrade.

  • Prolong and extend works and would be what I would use. Life and holidays also have expiration dates to be technical. You can extend and prolong a contract period just fine Jul 7, 2017 at 8:00
  • 'continuation' of the user account?
    – Spagirl
    Jul 7, 2017 at 10:23

2 Answers 2


"Extension of the user account was denied because the service has been superseded by [another]." is perfectly fine to use. I wouldn't use "prolongation" it would sound awkward IMO. I have used that exact phrase in my ticketing system for the same reason you are describing. It will be clear and concise.



The sentence could be

The renewal of the user account was denied because the service has been superseded by [another].

  • 1
    Possibly, it depends on the OP's context. "Renew" more often goes with something that is periodic, e.g. a year long contract that gets renewed every year; it wouldn't work so well for something that was originally a year long, then 1 month is added, then 3 months is added, then 2 months is added. This answer would benefit from a dictionary definition, citation of where the definition is from, and a link to it.
    – AndyT
    Jul 7, 2017 at 8:53

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