25 across
Expert:
‘Nessie
is
mostly
brass’
(8)
Expert: ‘Nessie is mostly brass’ (8)
hints
0
checks
0
hints
The definition is at the end of the clue.
How the clue works
PERTNESS is hidden inside "ExPERTNESSie", with "mostly" signalling that we take most of the letters from across "Expert Nessie". The definition is brass, meaning cheekiness or impudence.