I have two processes running with different speeds. In other words, one of them requires lesser time. I think 'Lesser time' is an awkward term. Is there any good alternative or synonym which I can use instead of 'lesser time'?

  • Do you mean it requires less time to complete, in which case a simple faster will suffice?
    – MorganFR
    May 20 '16 at 11:49
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    Your sentence would be fine if you just changed "lesser" to "less".
    – TrevorD
    May 20 '16 at 11:58
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    You could use "less time," "a shorter period of time" or "faster," but not "lesser time."
    – MorganFR
    May 20 '16 at 11:58
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    Following @MorganFR comment: or "more quickly". "Faster" & "more quickly" mean the same, but there are places where one seems correct & the other sounds odd (at least in BrE).
    – TrevorD
    May 20 '16 at 12:01
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    Less is already a comparative so you don't normally need to add ..er. However lesser has an adjectival sense of its own in certain idioms e.g. a lesser offence, or a lesser charge. But if there is a grammarian in the vicinity I would be interested to hear the full explanation myself.
    – WS2
    May 20 '16 at 12:44

In terms of programming, you can say one process is more efficient than the other because of less time complexity.

  • Can you please explain what that means? It doesn't make sense to me in British English! How can time be more or less complex?
    – TrevorD
    May 20 '16 at 15:57
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    In simple terms, Time complexity of an algorithm signifies the total time required by the program to run to completion.In your question you have described about two different processes(which I am assuming to be computer/software process) taking different amount of time i.e. different time complexity. May 20 '16 at 16:44
  • Good approach here. 'Time complexity ' is different from the time you'd measure on a stopwatch. Run a program on a very slow computer and it will take a long time, run it on a fast computer and it will take less time, but the program is just as complex on both machines and need to do the same amount of expensive 'thinking' May 21 '16 at 6:56

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