Fawning grown-up penning article on Scottish island mostly (9)
I believe the answer is:
adulation
'fawning' is the definition.
(thesaurus)
'grown-up penning article on scottish island mostly' is the wordplay.
'grown-up' becomes 'adult' (informal term for an adult).
'penning' means one lot of letters goes inside another.
'article on' becomes 'a' (the indefinite article in English. I am not sure about the 'on' bit.).
'scottish island' becomes 'Iona' (island of the Hebrides).
'mostly' means to remove the last letter (most but not all of the word).
'adult' placed around 'a' is 'adulat'.
'iona' with its last letter taken off is 'ion'.
'adulat'+'ion'='ADULATION'
Can you help me to learn more?
(Other definitions for adulation that I've seen before include "Praise - flattery" , "Hero-worship" , "Worshipping" , "Fulsome praise" , "Adoration, idolisation" .)