Scowling is obvious (7)
I believe the answer is:
glaring
This might be a double definition.
'scowling' is the first definition.
Both the answer and definition are adjectives. Perhaps you can see an association between them that I don't see?
'obvious' is the second definition.
(I've seen this in another clue)
'is' acts as a link.
Can you help me to learn more?
(Other definitions for glaring that I've seen before include "Dazzlingly bright" , "Looking daggers; obvious (error)" , "Blatant" , "Angrily staring" , "Shining intensely, very obvious" .)