Up in the air (9)
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">up in the air</span>' is the definition.<br/ ><span class="explanation-format__explanation">(similar in meaning)</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for uncertain that I've seen before include "In doubt" , "Not definitely known" , "up in the air" , "Not completely confident or sure of" , "Unsure" .)
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">up in the air</span>' is the definition.<br/ ><span class="explanation-format__explanation">(aloft means above or overhead)</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for aloft that I've seen before include "Above - on top" , "in a high position" , "At a considerable height" , "To great height" , "at high altitude" .)