Entreated Calvin to change for a reasonable length of time (1,6,8)
I believe the answer is:
a decent interval
'a reasonable length of time' is the definition.
I can't judge whether this definition defines the answer.
'entreated calvin to change' is the wordplay.
'to change' indicates an anagram.
'entreated'+'calvin'='entreatedcalvin'
'entreatedcalvin' anagrammed gives 'A DECENT INTERVAL'.
'for' is the link.
Can you help me to learn more?
I've seen this clue in the Sydney Morning Herald.
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