Take an oblique course (4)
I believe the answer is:
skew
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">take an oblique course</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this in another clue)</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for skew that I've seen before include "Turn or place at an angle; bias" , "Suddenly change direction or position" , "Make biased or distorted" , "Oblique; distort" , "At an oblique angle" .)