in·de·ci·sive /ˌɪndɪˈsaɪsɪv/
  (a.)非決定性的,猶豫不決的,不明確的
  In·de·ci·sive a.
  1. Not decisive; not bringing to a final or ultimate issue; as, an indecisive battle, argument, answer.
     The campaign had everywhere been indecisive.   --Macaulay.
  2. Undetermined; prone to indecision; irresolute; unsettled; wavering; vacillating; hesitating; as, an indecisive state of mind; an indecisive character.
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  indecisive
       adj 1: characterized by lack of decision and firmness; "an
              indecisive manager brought the enterprise to a
              standstill" [ant: decisive]
       2: not definitely settling something; "a long and indecisive
          war" [ant: decisive]
       3: not clearly defined; "indecisive boundaries running through
          mountains"