Crossword Genius

Vocalise quietly, attracting husband’s disapproving grunt (5)

Ross

I believe the answer is:

humph

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'vocalise quietly attracting husband's disapproving grunt' is the definition.
I can't tell whether this definition defines the answer.

'vocalise quietly attracting husband's' is the wordplay.
'vocalise quietly' becomes 'hump' (I can't justify this - if you can you should give a lot more credence to this answer).
'attracting' says to put letters next to each other.
'husband' becomes 'h' (abbreviation).
'hump'+'h'='HUMPH'

Can you help me to learn more?

(Other definitions for humph that I've seen before include "Clueless chairman" , "annoyed interjection" .)

I've seen this clue in The Times.
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