Waits in street least cloudy at night (9)

I believe the answer is:

starriest

'least cloudy at night' is the definition.

'waits in street' is the wordplay.
'waits' becomes 'tarries'.
'in' is an insertion indicator.
'street' becomes 'st'.
'tarries' put inside 'st' is 'STARRIEST'.

I've seen this clue in The Times.

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