The most common and most likely answer to this crossword clue is the 7 letter word PADDING
I've seen this crossword clue in Financial Times
P
A
D
D
I
N
G
More clues leading to the result PADDING
- Quietly including superfluous material
- Extra fat bear has lost weight
- Prowling Peruvian bear losing weight
- Waffle not turnover taken from London station
- Marmalade lover loses weight walking on foot
- Page including surplus material
- Initially, prose saying further unnecessary bits
- Prime piece of pork, including stuffing
- Papa putting in more excess material
Buddy explains!

The straight part
We know that "Waffle" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case waffle = padding.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 PADDING mean?
PADDING verb- To stuff.
- To furnish with a pad or padding.
- To increase the size of, especially by adding undesirable filler.
- To imbue uniformly with a mordant.
- To deliberately play the ball with the leg pad instead of the bat.
- To travel along (a road, path etc.).
- To travel on foot.
- To wear a path by walking.
- To walk softly, quietly or steadily, especially without shoes.
- To practise highway robbery.
- Soft filling material used in cushions etc.
- Extra characters such as spaces added to a record to fill it out to a fixed length.
- Extraneous text added to a message for the purpose of concealing its beginning, ending, or length.
- Anything of little value used to fill up space.