Child left scene of confusion (5)
I believe the answer is:
babel
'scene of confusion' is the definition.
(I've seen this before)
'child left' is the wordplay.
'child' becomes 'babe' (babe is a kind of child).
'left' becomes 'l' (common abbreviation).
'babe'+'l'='BABEL'
(Other definitions for babel that I've seen before include "Ancient city" , "Noisy confusion of voices" , "Tower built by Noah's descendants to reach to heaven" , "This Biblical Tower was very noisy, too many languages" , "racket" .)