Arrive, extremely lively and attractive (6)
I believe the answer is:
comely
'attractive' is the definition.
(thesaurus)
'arrive extremely lively' is the wordplay.
'arrive' becomes 'come' (coming is a kind of arriving).
'extremely' says to hollow out the word (remove centre letters).
'lively' with its middle removed is 'ly'.
'come'+'ly'='COMELY'
'and' acts as a link.
(Other definitions for comely that I've seen before include "Very pleasing to the eye, as Dev's maidens perhaps" , "Pretty" , "'Very pleasing to the eye, a de Valera maiden perhaps (6)'" , "Good-looking - like old-time maidens?" , "Fair (but not lovely!)" .)