Crossword Genius

Mum and I, extremely shaky (7)

Ross

I believe the answer is:

shivery

'shaky' is the definition.
(thesaurus)

'mum and i extremely' is the wordplay.
'mum' becomes 'sh' (I've seen this in other clues).
'and' says to put letters next to each other.
'extremely' becomes 'very' (I've seen this before).
'sh'+'i'+'very'='SHIVERY'

(Another definition for shivery that I've seen is " Affected by cold".)

I've seen this clue in The Independent.
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