Undeviating (6)
![Ross](/clue/static/ross-mug.min.png)
I believe the answer is:
direct
'undeviating' is the definition.
(similar in meaning)
This is the entire clue.
(Other definitions for direct that I've seen before include "Show someone the way" , "Straightforward, frank" , "Straight - guide" , "Credit (anag) - steer" , "Instruct" .)