Misbehaving niece all but irresistible (11)

I believe the answer is:

ineluctable

'irresistible' is the definition.
(thesaurus)

'misbehaving niece all but' is the wordplay.
'misbehaving' is an anagram indicator.
'niece'+'all'+'but'='nieceallbut'
'nieceallbut' anagrammed gives 'INELUCTABLE'.

(Another definition for ineluctable that I've seen is " impossible to avoid".)

I've seen this clue in The Independent.

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