Reportedly remained sober (5)

I believe the answer is:

staid

'sober' is the definition.
(synonyms)

'reportedly remained' is the wordplay.
'reportedly' shows a homophone (sound like).
'remained' becomes 'stayed' ('stay' can be a synonym of 'remain').
'stayed' sounds like 'STAID'.

(Other definitions for staid that I've seen before include "Sober, grave" , "Stuffy, traditional" , "Proper; sedate" , "Very conventional and dull" , "Conventional (character)" .)

I've seen this clue in The Times, The Telegraph, The Guardian, the Irish Times (Crosaire), The Independent and The Globe and Mail.

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