The most common and most likely answer to this crossword clue is the 7 letter word MATTINS
I've seen this crossword clue in The Daily Telegraph
M
A
T
T
I
N
S
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 MATTINS mean?
MATTINS noun- Together with lauds, the earliest of the canonical hours; normally at sunrise, but often earlier
- Morning prayers