Wasn't upright (5)
I believe the answer is:
leant
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">wasn't upright</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this in another clue)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for leant that I've seen before include "Advanced" , "pressed on" , "Tilted" , "Relied (on); inclined" , "Slanted" .)