Fawning rubbish entertains one on day off (8)

I believe the answer is:

toadyish

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'fawning rubbish entertains one on day off' is the definition.
I can't judge whether this defines the answer.

'fawning rubbish entertains one on day off' is the wordplay.
'fawning rubbish' becomes 'tosh' (I've seen this before. I am not sure about the 'fawning' bit.**).
'entertains' indicates putting letters inside.
'one' becomes 'i' (Roman numeral).
'on' says to put letters next to each other.
'off' indicates an anagram.
'i'+'day'='iday'
'iday' is an anagram of 'adyi'.
'tosh' placed around 'adyi' is 'TOADYISH'.

Can you help me to learn more?

I've seen this clue in The Independent.

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