Flawless but unenterprising and not in step (8)
I believe the answer is:
unerring
'flawless but unenterprising' is the definition.
I can't judge whether this definition defines the answer.
'not in step' is the wordplay.
'not' becomes 'un' (prefix meaning 'not').
'in step' becomes 'erring' (I can't explain this - if you can you should believe this answer much more).
'un'+'erring'='UNERRING'
'and' is the link.
Can you help me to learn more?
(Other definitions for unerring that I've seen before include "Deadly accurate, always on the mark" , "Not going wrong" , "Without deviation" , "Infallible" , "Never missing the mark or target" .)