Go this way, then that (6)
I believe the answer is:
zigzag
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">go this way then that</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this before)</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for zigzag that I've seen before include "Sharp turning" , "Pattern of short, sharp turns" , "Move first one way, then the other" , "Meandering course" , "Make sharp turns" .)