The most common and most likely answer to this crossword clue is the 5 plus 2 plus 1 plus 6 letter word STORM IN A TEACUP
I've seen this crossword clue in Financial Times
S
T
O
R
M
I
N
A
T
E
A
C
U
P
More clues leading to the result STORM IN A TEACUP
- Spot of trouble on a campsite with turf cut badly
- Silly fuss put to Americans to resolve
- Row where Earl Grey is? In reality it’s trivial
- Main actor upset performing Much Ado about Nothing
- Important case developed about university is a bit of an exaggeration
- Strange precaution with mast? This isn’t a hurricane!
- Much Ado About Nothing‘s endin the bag, finished
- Important cause kicked up a fuss
Buddy explains!
The straight part
We know that "it’s trivial" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case it’s trivial = storm in a teacup.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.