The most common and most likely answer to this crossword clue is the 4 plus 11 letter word SELF EXPLANATORY
S
E
L
F
E
X
P
L
A
N
A
T
O
R
Y
Buddy explains!
The straight part
We know that "No clarification required" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case no clarification required = self explanatory.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 SELF EXPLANATORY mean?
SELF EXPLANATORY adjective- Obvious, having a nature that makes it clear or that explains itself.