The most common and most likely answer to this crossword clue is the 8 letter word NONSENSE
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More clues leading to the result NONSENSE
- Rhubarb is not to French taste, perhaps
- Bunk, not a single one, in which briefly to dispatch son
- European refusal to feel rubbish
- Aroma around poles inside of tent is rubbish
- Fool’s speech in production of Lear?
- Cobblers start to nail, working by feel
- Fool’s speech in production of Lear
- Name wayward son seen making moonshine
- Balderdash, feature defining itself, nothing less, with name
- Soon dismissing Amy’s original opinion of tripe
Buddy explains!

The straight part
We know that "Waffle/stuff and/that’s that!" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case waffle/stuff and/that’s that! = nonsense.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 NONSENSE mean?
NONSENSE noun- Letters or words, in writing or speech, that have no meaning or pattern or seem to have no meaning.
- An untrue statement.
- That which is silly, illogical and lacks any meaning, reason or value; that which does not make sense.
- Something foolish.
- A type of poetry that contains strange or surreal ideas, as, for example, that written by Edward Lear.
- A damaged DNA sequence whose products are not biologically active, that is, that does nothing.
- To make nonsense of;
- To attempt to dismiss as nonsense; to ignore or belittle the significance of something; to render unimportant or puny.
- To joke around, to waste time
- Resulting from the substitution of a nucleotide in a sense codon, causing it to become a stop codon (not coding for an amino-acid).
- Nonsensical
- An emphatic rejection of something one has just heard and does not believe or agree with.