The most common and most likely answer to this crossword clue is the 9 letter word IRASCIBLE
I've seen this crossword clue in Financial Times
I
R
A
S
C
I
B
L
E
More clues leading to the result IRASCIBLE
- Stew of rice and basil getting heated quickly
- King departing, crab-like, is unusually crabby
- Touchy Latin in bar is upset with ice melting
- Cook rice with basil and make it snappy
- Hot-tempered Irish like newly introduced religious text
- Hot-headed manoeuvring of basic flier ignoring fighter plane
- Quick-tempered — bails out, catching cold, consumed by anger
- Rage hiding basic struggle by novice — it's fiery
- A rib slice cooked to be crusty
- Tetchy Gershwin’s upsetting the Spanish writer
Buddy explains!

The straight part
We know that "Touchy" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case touchy = irascible.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 IRASCIBLE mean?
IRASCIBLE adjective- Easily provoked to outbursts of anger; irritable.