Trash rough sketch after fuss (10)

I believe the answer is:

flapdoodle

'trash' is the definition.
(thesaurus)

'rough sketch after fuss' is the wordplay.
'rough sketch' becomes 'doodle' (I've seen this before).
'after' means one lot of letters go next to another.
'fuss' becomes 'flap' (flapping is a kind of fussing).
'doodle' put after 'flap' is 'FLAPDOODLE'.

(Another definition for flapdoodle that I've seen is " inane words".)

I've seen this clue in The Times.

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