Crossword Genius

Was uncertain about old elastic pants (10)

Ross

I believe the answer is:

oscillated

'was uncertain' is the definition.
(oscillate can mean to be uncertain about something)

'old elastic pants' is the wordplay.
'pants' indicates an anagram (UK informal term for 'nonsense' or 'rubbish').
'old'+'elastic'='oldelastic'
'oldelastic' with letters rearranged gives 'OSCILLATED'.

'about' is the link.

I've seen this clue in The Guardian.
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