Bachelors hurt inside (4)

I believe the answer is:

ache

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'bachelors hurt inside' is the definition.
Although both the answer and 'bachelors' are verbs, they are not in the same form of the verb.

'bachelors hurt inside' is the wordplay.
'inside' indicates a hidden word.
'ACHE' is hidden within 'bachelors hurt'.

Can you help me to learn more?

(Other definitions for ache that I've seen before include "Continuous hurt" , "Feel sore" , "Hanker" , "agony" , "Dull prolonged pain" .)

I've seen this clue in The Guardian.

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