The most common and most likely answer to this crossword clue is the 8 letter word CONFIDES
I've seen this crossword clue in Financial Times
C
O
N
F
I
D
E
S
Buddy explains!

The straight part
We know that "Entrusts" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case entrusts = confides.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 CONFIDES mean?
CONFIDES verb- To trust, have faith (in).
- To entrust (something) to the responsibility of someone.
- To take (someone) into one's confidence, to speak in secret with. ( + in)
- To say (something) in confidence.