The most common and most likely answer to this crossword clue is the 9 letter word IMPULSIVE
I've seen this crossword clue in The Guardian
I
M
P
U
L
S
I
V
E
More clues leading to the result IMPULSIVE
- Nasty lump is on this writer’s rash
- Hasty devil, posh as it happens, scoffing last of vol-au-vents
- The setter’s disgusting, not about to be rash
- Lumps inflamed after one scratched skin off hives rash
- Reckless devil beginning to upset Elvis mimic
- Is plum off? I have rash
- Reckless one, primarily misreading heart rate, injected with IV
Buddy explains!
The straight part
We know that "Hasty" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case hasty = impulsive.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 IMPULSIVE mean?
IMPULSIVE noun- That which impels or gives an impulse; an impelling agent.
- One whose behaviour or personality is characterized by being impulsive.
- Having the power of driving or impelling; giving an impulse; moving; impellent.
- Actuated by impulse or by transient feelings; inclined to make rapid decisions without due consideration.
- Acting momentarily, or by impulse; not continuous – said of forces.