Slips
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">slips</span>' is the definition.<br/ ><span class="explanation-format__explanation">('err' can be a synonym of 'slip')</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for errs that I've seen before include "Makes a mistake" , "Strays" , "Goes astray" , "Boobs" , "Is mistaken" .)
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">slips</span>' is the definition.<br/ ><span class="explanation-format__explanation">('skid' can be a synonym of 'slip')</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for skids that I've seen before include "Slides sideways" , "From coasts" , "Slides without control" .)