A thug will ruin anything (5)

I believe the answer is:

aught

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'anything' is the definition.
(I've seen this before)

'a thug will ruin' is the wordplay.
'a thug' can be anagrammed to 'AUGHT'.
Though, I am not sure how the anagram is indicated.

Can you help me to learn more?

(Other definitions for aught that I've seen before include "Anything (Shakespearean)" , "Anything at all (archaic)" , "Nothing" , "Emphatically anything" .)

I've seen this clue in The Irish Independent.

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