Take no notice of (6)
I believe the answer is:
ignore
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">take no notice of</span>' is the definition.<br/ ><span class="explanation-format__explanation">(to take no notice of something is to ignore it)</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for ignore that I've seen before include "Deliberately overlook" , "Fail to consider" , "Forget" , "Region (anag)" , "Send to Coventry" .)