Indefinite (5)
I believe the answer is:
vague
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">indefinite</span>' is the definition.<br/ ><span class="explanation-format__explanation">(synonyms)</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for vague that I've seen before include "Indeterminate" , "not focused" , "Imprecise (in thought)" , "Indistinct or imprecise" , "Not clearly expressed or perceived" .)