Prudish, naff, fancy idea regularly ignored before closer scrutiny (5,5)

I believe the answer is:

prima facie

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'ignored before closer scrutiny' is the definition.
The answer and definition are different parts of speech. However, past participle verbs and adjectives can occasionally mean the same thing.

'prudish naff fancy idea regularly' is the wordplay.
'prudish' becomes 'prim' (synonyms).
'regularly' means one should take alternating letters (regularly take one letter, leave next etc.).
'naff'+'fancy'+'idea'='nafffancyidea'
The alternate letters of 'nafffancyidea' are 'afacie'.
'prim'+'afacie'='PRIMA FACIE'

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(Other definitions for prima facie that I've seen before include "At first sight (Latin)" , "On first inspection" , "usable evidence?" , "before detailed examination" .)

I've seen this clue in The Times.

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