With the visor off, it’s very cool (9)
I believe the answer is:
barefaced
'very cool' is the definition.
Both the answer and definition are adjectives. Maybe they are linked in a way I don't understand?
'with the visor off' is the wordplay.
'with' is an insertion indicator.
'the visor' becomes 'reface' (I can't explain this - if you can you should give a lot more credence to this answer).
'off' becomes 'bad' (I've seen this in other clues).
'reface' going inside 'bad' is 'BAREFACED'.
'it's' is the link.
Can you help me to learn more?
(Other definitions for barefaced that I've seen before include "Bold" , "Unshaven kind of blatant liar" , "Audacious" , "Shameless like liar, having shaven visage" , "Cheeky" .)