Each time at the end, the cha-cha is really simple (4)
I believe the answer is:
easy
'simple' is the definition.
(similar in meaning)
'each time at the end the cha-cha is really' is the wordplay.
I cannot quite understand how this works, but
'each' could be 'ea' (abbreviation) and 'ea' is present in the answer.
This explanation may well be incorrect...
Can you help me to learn more?
(Other definitions for easy that I've seen before include "Simply achieved" , "Convenient" , "careful!" , "Facile" , "Soft" .)