Second language German? That will cause a row (7)
I believe the answer is:
shindig
'second language german? that will cause a row' is the definition.
The definition suggests a singular noun which matches the answer.
'second language german?' is the wordplay.
'second' becomes 's' (common abbreviation).
'language' becomes 'hindi' (Hindi is an example).
'german?' becomes 'g' (abbreviation).
's'+'hindi'+'g'='SHINDIG'
Can you help me to learn more?
(Other definitions for shindig that I've seen before include "Lively party, knees-up" , "Hidings (anag) - party" , "Hooley" , "Lively celebration (informal)" , "wild party" .)