Unsettles when rage ends in confusion (8)

I believe the answer is:

deranges

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

'unsettles' is the definition.
The answer and definition can be both to do with human feelings as well as being verbs in their -s form.
Maybe there's a link between them I don't understand?

'rage ends in confusion' is the wordplay.
'in confusion' is an anagram indicator.
'rage'+'ends'='rageends'
'rageends' anagrammed gives 'DERANGES'.

'when' acts as a link.

Can you help me to learn more?

I've seen this clue in The Irish Independent.

Want a hint initially instead of a full solution? Install my app