Cryptic crossword clue
Show disgust at performer with feather duster, ignoring odd support 7

The most common and most likely answer to this crossword clue is the 7 letter word BOOKEND

I've seen this crossword clue in Independent
B
O
O
K
E
N
D

Buddy explains!

The straight part
We know that "support" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case support = bookend.
The cryptic/wordplay part
In cryptic crossword there's often an wordplay/cryptic part as well.
This part involves a more complex hint, such as an anagram, homophone, hidden word, etc.
Sadly, We don't have an explanation for this specific crossword clue yet.

What does BOOKEND mean?

BOOKEND noun
  1. A heavy object or moveable support placed at one or both ends of a row of books for the purpose of keeping them upright.
  2. Something that comes before, after, or at both sides of something else.
BOOKEND verb
  1. To come before and after, or at both sides of.

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