Family cite wrong form of energy (7)
I believe the answer is:
kinetic
'form of energy' is the definition.
'kinetic' can be an answer for 'energy' (kinetic energy is a kind of energy). I am not certain of the 'form of' bit.
'family cite wrong' is the wordplay.
'family' becomes 'kin' (synonyms).
'wrong' indicates an anagram.
'cite' anagrammed gives 'etic'.
'kin'+'etic'='KINETIC'
Can you help me to learn more?
(Other definitions for kinetic that I've seen before include "due to motion" , "Resulting from motion" , "Energising" , "(E.g. energy) of motion" , "Relating to motion" .)