Crossword Genius

Repulsive leader leads an unspecified number (7)

Ross

I believe the answer is:

noisome

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'repulsive' is the definition.
(I've seen this in another clue)

'leader leads an unspecified number' is the wordplay.
'leader leads' becomes 'noi' (I am not sure about this - if you are sure you should believe this answer much more).
'an unspecified number' becomes 'some' (I've seen this before).
'noi'+'some'='NOISOME'

Can you help me to learn more?

(Other definitions for noisome that I've seen before include "Harmful to health; disgusting" , "Foul-smelling - semi-Ono (anag)" , "Disagreeable, unpleasant" , "Foul-smelling, noxious" , "noxious smells" .)

I've seen this clue in The Daily Mail.
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