Horny African shaking rear in style (4)
I believe the answer is:
elan
'style' is the definition.
(synonyms)
I don't understand how the rest of the clue works.
Can you help me to learn more?
(Other definitions for elan that I've seen before include "French flair" , "Energy, style and enthusiasm" , "Flair and dash" , "Stylishness" , "spirit" .)