Almost lose sight of bugbear (6)
I believe the answer is:
goblin
'bugbear' is the definition.
The definition and answer can be both people as well as being singular nouns.
Maybe you can see an association between them that I don't see?
I don't understand the remainder of the clue.
Can you help me to learn more?
(Other definitions for goblin that I've seen before include "nasty little thing" , "Small grotesque sprite" , "Mischievous dwarf" , "mischievous spirit" , "Dwarf-like creature" .)