The most common and most likely answer to this crossword clue is the 6 letter word TITCHY
I've seen this crossword clue in Financial Times
T
I
T
C
H
Y
More clues leading to the result TITCHY
- Yacht: it moves after stopping a minute
- Little desire they must have for that fellow
- Tiny little bird taps busily, using tail
- Tiny tot’s back needing a scratch?
- Little time, long year
- Very little desire in these people losing heart completely
- Small tip of tooth causing irritation
- Little tense, impatient to go under
- Very little gift finally causing irritation
- Bird sitting on church, unknown and very small
Buddy explains!

The straight part
We know that "Tiny" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case tiny = titchy.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 TITCHY mean?
TITCHY adjective- Tiny, very small.
- Touchy, irritated.