The most common and most likely answer to this crossword clue is the 10 letter word CONSULTING
I've seen this crossword clue in The Times
C
O
N
S
U
L
T
I
N
G
Buddy explains!

The straight part
We know that "seeking advice" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case seeking advice = consulting.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.
Crossword Answer definitions
CONSULTING verb- To seek the opinion or advice of another; to take counsel; to deliberate together; to confer.
- To advise or offer expertise.
- To work as a consultant or contractor rather than as a full-time employee of a firm.
- To ask advice of; to seek the opinion of (a person)
- To refer to (something) for information.
- To have reference to, in judging or acting; to have regard to; to consider; as, to consult one's wishes.
- To deliberate upon; to take for.
- To bring about by counsel or contrivance; to devise; to contrive.