Hang in the air (5)
I believe the answer is:
hover
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">hang in the air</span>' is the definition.<br/ ><span class="explanation-format__explanation">(synonyms)</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for hover that I've seen before include "Wait around (like a kestrel)" , "Hang in the air or waver" , "Be poised" , "Float above in the air, perhaps a craft" , "Remain in one spot in the air" .)