You good with mostly wealthy Hungarian? (5)
I believe the answer is:
ugric
'hungarian?' is the definition.
(hungarian is a kind of Ugric)
'you good with mostly wealthy' is the wordplay.
'you' becomes 'u' (commonly used in online communication).
'good' becomes 'g' (abbreviation).
'with' is a charade indicator (letters next to each other).
'mostly' means to remove the last letter (most but not all of the word).
'wealthy' becomes 'rich' (similar in meaning).
'rich' with its final letter taken off is 'ric'.
'u'+'g'+'ric'='UGRIC'
(Other definitions for ugric that I've seen before include "tongue" , "Type of language" , "Language family" .)