The most common and most likely answer to this crossword clue is the 6 letter word MASKER
M
A
S
K
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 MASKER mean?
MASKER verb- To render giddy or senseless
- To be bewildered.
- To choke; stifle.
- To decay; rust.
- One who wears a mask; one who appears in disguise at a masquerade or wears a mask in a ritual.
- That which masks (noise in a signal, etc.).