Doubly dead language? (4,5)
I believe the answer is:
late latin
'doubly dead language?' is the definition.
'late latin' can be an answer for 'language?' (Late Latin is an example). I am not certain of the 'doubly dead' bit.
'dead language?' is the wordplay.
'dead' becomes 'late' ('late' can be similar in meaning to 'dead').
'language?' becomes 'latin' (Latin is an example**).
'late'+'latin'='LATE LATIN'
Can you help me to learn more?
(Another definition for late latin that I've seen is " old language".)