The most common and most likely answer to this crossword clue is the 4 letter word HUMP
I've seen this crossword clue in The Daily Telegraph
H
U
M
P
More clues leading to the result HUMP
- Bad smell linked to papa? It’s a hunch
- Strike to get time off for depression
- Sound quiet in a fit of peevishness
- Carry first of parcels by drone
- Carry a load of despondency
- Take the end of August off to beat depression
- What you get with husband facing referee?
- Camel has such a bad mood
- One calms motorists tense leaving crash
- When crisis has to be dealt with, you’ll want to get over it
Buddy explains!

The straight part
We know that "Camel has such/a bad mood" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case camel has such/a bad mood = hump.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 HUMP mean?
HUMP noun- A mound of earth.
- A deformity in humans caused by abnormal curvature of the upper spine.
- (animals) A rounded fleshy mass, such as on a camel or zebu.
- An act of sexual intercourse.
- (with definite article) A bad mood.
- A painfully boorish person.
- A speed hump.
- A wave that forms in front of an operating hovercraft and impedes progress at low speeds.
- To bend something into a hump.
- To carry (something), especially with some exertion.
- To rhythmically thrust the pelvis in a manner conducive to sexual intercourse
- To prepare for a great exertion; to put forth effort.
- To vex or annoy.
- To shunt wagons / freight cars over the hump in a hump yard.