Criminal meets naive Asian (10)
I believe the answer is:
vietnamese
'asian' is the definition.
(Vietnamese is an example)
'criminal meets naive' is the wordplay.
'criminal' indicates anagramming the letters.
'meets'+'naive'='meetsnaive'
'meetsnaive' is an anagram of 'VIETNAMESE'.
(Other definitions for vietnamese that I've seen before include "oriental language" , "Natives of Hanoi" , "Asians" , "Asian language" , "People" .)