Using horsewhip or alternative, show strong feelings about somebody (4-7)

I believe the answer is:

hero worship

I'm a little stuck... Click here to teach me more about this clue!

'alternative show strong feelings about somebody' is the definition.
I can't judge whether this definition defines the answer.

'using horsewhip or' is the wordplay.
'using' is an anagram indicator.
'horsewhip'+'or'='horsewhipor'
'horsewhipor' anagrammed gives 'HERO-WORSHIP'.

Can you help me to learn more?

(Other definitions for hero worship that I've seen before include "adore?" , "Admiration of an idealised person" , "Idolise" .)

I've seen this clue in The Telegraph.

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