The most common and most likely answer to this crossword clue is the 7 plus 3 letter word HOPPING MAD
H
O
P
P
I
N
G
M
A
D
More clues leading to the result HOPPING MAD
- In a rage, having stubbed one's toe?
- Wild, like a kangaroo?
- About to explode after removal of pin?
- Like the compulsive buyer heading off in a rage?
- A PM hoping to mobilise department gets very angry
- LividĀ as a kangaroo?
- Aiming quietly to come in before mother retires furious
- Wishing to maintain quiet, mother rises in a rage
- No-frills shopping made in high dudgeon
- Keen on the triple jump but very sore
Buddy explains!

The straight part
We know that "in a rage" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case in a rage = hopping mad.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.