Crossword Genius

Perk up again - briefly back with a street Lothario (8)

Ross

I believe the answer is:

reawaken

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'perk up again' is the definition.
I can't tell whether this definition defines the answer.

'briefly back with a street lothario' is the wordplay.
'briefly' means to remove the last letter.
'back' becomes 'rear' (synonyms).
'with' means one lot of letters go next to another.
'a street lothario' becomes 'waken' (I can't explain this - if you can you should give a lot more credence to this answer).
'rear' with its last letter removed is 'rea'.
'rea'+'waken'='REAWAKEN'

Can you help me to learn more?

(Other definitions for reawaken that I've seen before include "Rouse again from sleep" , "spring again" , "Arouse again, interest say" , "Revive" , "Bring to life again" .)

I've seen this clue in The Independent.
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