The most common and most likely answer to this crossword clue is the 15 letter word NICKEL-AND-DIME
I've seen this crossword clue in The Times
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More clues leading to the result NICKEL-AND-DIME
Buddy explains!
The straight part
We know that "Trivial" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case trivial = nickel-and-dime.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 NICKEL-AND-DIME mean?
NICKEL-AND-DIME verb- To charge, or be charged, several unexpected small amounts of money, often in the form of fees, taxes, or related expenses to a venture, which when taken as a whole add up to a significant unexpected cost.
- To wear down in small increments; to quibble or obsess endlessly with (someone) over trifles.
- Small time; operating on a small scale; involving small amounts of money; petty or cheap.