The most common and most likely answer to this crossword clue is the 8 letter word SMARMIER
I've seen this crossword clue in The Daily Telegraph
S
M
A
R
M
I
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 SMARMIER mean?
SMARMIER adjective- Falsely earnest, smug, or ingratiating.
- Unctuous, greasy, as hair from pomade