Loud, one needing quiet after kid turned up (6)
I believe the answer is:
garish
'loud' is the definition.
(I know that loud can be written as garish)
I don't understand how the rest of the clue works.
(Other definitions for garish that I've seen before include "Colourful in a vulgar manner" , "Brashly bright" , "Bright and showy" , "Gaudy, vulgarly bright" , "Cheap, flash" .)