The most common and most likely answer to this crossword clue is the 6 letter word SNORER
S
N
O
R
E
R
More clues leading to the result SNORER
- Tin, about to be returned, containing yellow kipper we hear
- A number more angry about someone noisy in bed
- Not best companion for quiet night out?
- Welcoming back to prison, more angry one might cause disturbance at night?
- Relatively irritated about new annoying bedfellow?
- One making noises during long sermon, for example, and not during short sermon
Buddy explains!

The straight part
We know that "One making noises during long sermon, for example" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case one making noises during long sermon, for example = snorer.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.