Unclear play relates to a type of energetic family? (7)
I believe the answer is:
nuclear
'family?' is the definition.
(nuclear family is a kind of family)
'unclear play' is the wordplay.
'play' indicates an anagram.
'unclear' with letters rearranged gives 'NUCLEAR'.
'relates to a type of energetic' acts as a link.
I am not very happy about this link. Some or all of it may belong to another bit of the clue.
Can you help me to learn more?
(Other definitions for nuclear that I've seen before include "In sociology, of a family of parents and offspring only" , "Sort of energy" , "An ulcer (anag)" , "Like some physics" , "source of energy" .)