The most common and most likely answer to this crossword clue is the 15 letter word INCONSEQUENTIAL
I've seen this crossword clue in The Daily Telegraph
I
N
C
O
N
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E
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U
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L
More clues leading to the result INCONSEQUENTIAL
- Petty criminal in one clan’s quiet
- Online scan quite absurdly trivial
- Trivial study in order to follow inner mind
- Fiery Toscanini hosts irate queen by lake, fiddling
- Unimportant painting involving point of order
- Quaint lines, once translated, having little significance
- Student pursues trendy antiques, once treated as unimportant
- Minor cast acts in Lion Queen
- Unusual line on nice squat of little importance
- Minor ordered to accompany in swindle
Buddy explains!
The straight part
We know that "unimportant" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case unimportant = inconsequential.The cryptic/wordplay part
In cryptic crossword there's often an wordplay/cryptic part as well.This part involves a more complex hint, such as an anagram, homophone, hidden word, etc.
Sadly, We don't have an explanation for this specific crossword clue yet.
What does INCONSEQUENTIAL mean?
INCONSEQUENTIAL noun- Something unimportant; something that does not matter.
- Having no consequence; not consequential; of little importance.
- Not logically following from the premises.