Similar to a family group (4)
I believe the answer is:
akin
'similar to' is the definition.
(I've seen this in another clue)
'a family group' is the wordplay.
I cannot really understand how this works, but
'a' is present in the answer.
'family' could be 'kin' (synonyms) and 'kin' is found in the answer.
This accounts for all the letters.
This may be the basis of the clue (or it may be nonsense).
Can you help me to learn more?
(Other definitions for akin that I've seen before include "not totally similar" , "Related or similar - as a relative?" , "Of like nature or related" , "Close" , "Of a similar nature" .)