Fear of a little rascal? (6)
I believe the answer is:
terror
This clue might be a double definition.
'fear' is the first definition.
(terror is a kind of fear)
'a little rascal?' is the second definition.
'terror' can be an answer for 'rascal?' (terror is a kind of rascal). I am not certain of the 'a little' bit.
'of' acts as a link.
Can you help me to learn more?
(Other definitions for terror that I've seen before include "Fear - now being warred on" , "Abject fear" , "Paralysing fear" , "Young miscreant" , "Overwhelming feeling of fear" .)