Thrill of umpteenth rally (7)

I believe the answer is:

enthral

'thrill' is the definition.

'of umpteenth rally' is the wordplay.
'of' says the answer is hidden in the clue.
'ENTHRAL' is hidden within 'umpteenth rally'.

(Other definitions for enthral that I've seen before include "Fascinate - grip" , "Beguile" , "Hold captive" , "rivet" , "Captivate" .)

I've seen this clue in The Telegraph.

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