Son visiting art gallery shows good judgement (5)
I believe the answer is:
taste
'good judgement' is the definition.
'taste' can be an answer for 'judgement' (thesaurus). I am unsure of the 'good' bit.
'son visiting art gallery' is the wordplay.
'son' becomes 's'.
'visiting' means one lot of letters goes inside another.
'art gallery' becomes 'tate' (I've seen this before).
's' going inside 'tate' is 'TASTE'.
'shows' is the link.
Can you help me to learn more?
(Other definitions for taste that I've seen before include "Savour; discernment" , "Little bit" , "Smack" , "Gustatory sensation" , "Flavour or discrimination" .)