Cryptic crossword clue
Helpful maxim, not in favour of mood changer 9,4

The most common and most likely answer to this crossword clue is the 9 plus 4 letter word AUXILIARY VERB

A
U
X
I
L
I
A
R
Y
V
E
R
B

Buddy explains!

The straight part
We know that "mood changer" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case mood changer = auxiliary verb.
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.

Crossword Answer definitions

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