What is the difference between indefinite and indecisive, and when do you use each one of them?

closed as general reference by user2683, kiamlaluno, Matt E. Эллен, waiwai933 Aug 19 '12 at 4:50

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1-vague, not clearly defined

... so indefinite that it is confusing.

2-no fixed end

... voted to begin an indefinite strike


1-having difficulty with "decisions" or "choices"

a weak and indecisive leader


The outcome of the battle was indecisive.


You should use indefinite in a situation which is difficult to define: there are various many possible explanations and it's difficult to say which of them is true. For example:

I went through the numbers over and over again and the results were indefinite. I don't think we can get a clear, definite answer on this.

On the other hand, you should use indecisive when there are only a few options being compared and chosen from, like:

The two runners entered the finish line both at once. The referees had a hard time with the indecisive results.

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