The most common and most likely answer to this crossword clue is the 9 letter word SHALLOWER
S
H
A
L
L
O
W
E
R
Buddy explains!

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 SHALLOWER mean?
SHALLOWER adjective- Having little depth; significantly less deep than wide.
- Extending not far downward.
- Concerned mainly with superficial matters.
- Lacking interest or substance.
- Not intellectually deep; not penetrating deeply; simple; not wise or knowing.
- Not deep in tone.
- Not far forward, close to the net.