Ventilates (4)
I believe the answer is:
airs
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">ventilates</span>' is the definition.<br/ ><span class="explanation-format__explanation">('air' can be a synonym of 'ventilate')</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for airs that I've seen before include "Pretentiousness" , "Broadcasts" , "Strain's" , "- - and graces" , "Attitudes or tunes" .)