Leave home finally? Rather! (5)

I believe the answer is:

quite

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'rather' is the definition.
(synonyms)

'leave home finally?' is the wordplay.
'leave' becomes 'quit' (quitting is a kind of leaving).
'home finally?' becomes 'e' (I can't justify this - if you can you should give a lot more credence to this answer).
'quit'+'e'='QUITE'

Can you help me to learn more?

(Other definitions for quite that I've seen before include "To a degree" , "Fairly; indeed" , "Completely -- to some extent" , "Somewhat; fully" , "Somewhat; completely" .)

I've seen this clue in The Times.

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