Son walked awkwardly dressed like a baby (8)

I believe the answer is:

swaddled

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'dressed like a baby' is the definition.
I can't tell whether this definition defines the answer.

'son walked awkwardly' is the wordplay.
'son' becomes 's' (genealogical abbreviation for son).
'walked awkwardly' becomes 'waddled' (I've seen this in another clue).
's'+'waddled'='SWADDLED'

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(Other definitions for swaddled that I've seen before include "well wrapped up" , "Wrapped in cloth" , "Tightly wrapped up" , "Restricted by material" .)

I've seen this clue in The Guardian.

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