Cryptic crossword clue
Comparatively sensitive whistleblower’s upset about heartless intimidation 5

The most common and most likely answer to this crossword clue is the 5 letter word FINER

I've seen this crossword clue in Financial Times
F
I
N
E
R


Buddy explains!

The straight part
We know that "Comparatively sensitive" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case comparatively sensitive = finer.
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 FINER mean?

FINER adjective
  1. Senses referring to subjective quality.
  2. Senses referring to objective quality.
  3. Behind the batsman and at a small angle to the line between the wickets.
  4. Subtle; thin; tenuous.
FINER noun
  1. One who fines or purifies.

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