The most common and most likely answer to this crossword clue is the 9 letter word LIP-READS
I've seen this crossword clue in The Times
L
I
P
-
R
E
A
D
S
More clues leading to the result LIP-READS
Buddy explains!

The straight part
We know that "Interprets" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case interprets = lip-reads.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.