Crossword Genius

Subdues gangster and hangs after temperature drops (10)

Ross

I believe the answer is:

alleviates

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

'subdues' is the definition.
The definition and answer can be both related to change as well as being verbs in their -s form.
Perhaps you can see a link between them that I can't see?

'gangster and hangs after temperature drops' is the wordplay.
I cannot quite understand how this works, but
'gangster' could be 'al' (Al Capone) and 'al' is located in the answer.
'temperature' could be 't' (abbreviation) and 't' is located in the answer.
This explanation may well be incorrect...

Can you help me to learn more?

I've seen this clue in The Hindu.
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