The most common and most likely answer to this crossword clue is the 5 plus 2 letter word RIGHT ON
I've seen this crossword clue in Financial Times
R
I
G
H
T
O
N
More clues leading to the result RIGHT ON
- Trendy seaside destination with no leader
- Left off opposition to being politically correct
- Trendy coastal resort that’s in England, not Belgium
- Trendy resort town avoided by bachelor
- Trendy outfit? Hot!
- It could mean ‘left off’? Absolutely correct!
- Morally trendy equivalents of Reverend’s initial letter or two
- Topless resort? Hell yeah!
- Quite correct to be trendy
- Heading off for seaside resort? Absolutely!
Buddy explains!

The straight part
We know that "Trendy" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case trendy = right on.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 RIGHT ON mean?
RIGHT ON adjective- Possessing political and social views that are considered to be fashionable and left-wing.