Crossword Genius

Terrible torpor in leaderless TUC showing decay (10)

Ross

I believe the answer is:

corruption

'decay' is the definition.
(corruption is a kind of decay)

'terrible torpor in leaderless tuc' is the wordplay.
'terrible' is an anagram indicator.
'leaderless' means to remove the first letter.
'torpor'+'in'='torporin'
'torporin' with its initial letter taken off is 'orporin'.
'orporin'+'tuc'='orporintuc'
'orporintuc' is an anagram of 'CORRUPTION'.

'showing' acts as a link.

I've seen this clue in The Telegraph.
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