Move fast through detailed terms and conditions? (6)
I believe the answer is:
sprint
'move fast' is the definition.
'through detailed terms and conditions?' is the wordplay.
I cannot quite see how this works, but
'through' could be 'in' and 'in' is found in the answer.
This may be the basis of clue (or it may be nonsense).
(Other definitions for sprint that I've seen before include "To make fast progress" , "Short fast race" , "Run at full speed for a short distance" , "Run rapidly" , "Run quickly" .)