The most common and most likely answer to this crossword clue is the 6 letter word PONDER
I've seen this crossword clue in Financial Times
P
O
N
D
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 PONDER mean?
PONDER noun- A period of deep thought.
- To wonder, think of deeply
- To consider (something) carefully and thoroughly; to chew over, mull over
- To weigh