Initially trifling ridiculous inanities varying in aptness (6)

I believe the answer is:

trivia

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'initially trifling ridiculous inanities varying in aptness' is the definition.
I can't judge whether this definition defines the answer.

'initially trifling ridiculous inanities varying in aptness' is the wordplay.
'initially' suggests taking the first letters.
The initial letters of 'trifling ridiculous inanities varying in aptness' is 'TRIVIA'.

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(Other definitions for trivia that I've seen before include "Trifles, unimportant details" , "Unimportant information" , "Useless information - trifles" , "Matters very little" , "Unimportant or inconsequential things" .)

I've seen this clue in The Irish Independent.

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