Among other things, I learnt design in Italy and Austria (5,4)
I believe the answer is:
inter alia
'among other things' is the definition.
(synonyms)
'i learnt design in italy and austria' is the wordplay.
'design' indicates an anagram.
'in' indicates putting letters inside.
'italy' becomes 'i'.
'and' says to put letters next to each other.
'austria' becomes 'a'.
'i'+'learnt'='ilearnt'
'ilearnt' anagrammed gives 'nterali'.
'i'+'a'='ia'
'nterali' going into 'ia' is 'INTER ALIA'.
(Other definitions for inter alia that I've seen before include "amongst others" , "Midst other things" , "Among other things, in Latin" , "among others" , "amongst other things" .)