Complete article on turn, very popular (3,3,2)
I believe the answer is:
all the go
'popular' is the definition.
I know nothing about this answer so I cannot tell whether it can be defined by this definition.
'complete article on turn very' is the wordplay.
'complete' becomes 'all' ('all' can be similar in meaning to 'complete').
'article' becomes 'the' (the 'definite article' part of speech).
'on' means one lot of letters go next to another.
'turn very' becomes 'go' (a person's move in a board game. I am not sure about the 'very' bit.**).
'all'+'the'+'go'='ALL THE GO'
Can you help me to learn more?
(Another definition for all the go that I've seen is " no longer really fashionable".)