The most common and most likely answer to this crossword clue is the 7 letter word SNOOZED
I've seen this crossword clue in The Times
S
N
O
O
Z
E
D
Buddy explains!
The straight part
We know that "Went off" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case went off = snoozed.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 SNOOZED mean?
SNOOZED verb- To sleep, especially briefly; to nap, doze.
- To pause; to postpone for a short while.