The most common and most likely answer to this crossword clue is the 7 letter word SHALLOW
I've seen this crossword clue in The Daily Telegraph
S
H
A
L
L
O
W
More clues leading to the result SHALLOW
- Everyone in performance is superficial
- Frivolous conduct entertains everyone
- Insincere, each person in review
- Broadcast about manor lacking in depth
- Weak plant taken outside lobby
- Appear to assume everybody’s lacking intellectual subtlety
- Shut up and concede, ignorant!
- Everything in exhibition is superficial
- Everyone involved in entertainment is superficial
- Sickly in hospital? On the contrary, it’s superficial
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 SHALLOW mean?
SHALLOW noun- A shallow portion of an otherwise deep body of water.
- A fish, the rudd.
- A costermonger's barrow.
- To make or become less deep.
- 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.