Cryptic crossword clue
S ign of cold weather, not special, teeth only ultimately chatter 5

The most common and most likely answer to this crossword clue is the 5 letter word FROTH

F
R
O
T
H


Buddy explains!

The straight part
We know that "chatter" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case chatter = froth.
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 FROTH mean?

FROTH noun
  1. Foam
  2. Unimportant events or actions; drivel
FROTH verb
  1. To create froth in (a liquid).
  2. (of a liquid) To bubble.
  3. To spit, vent, or eject, as froth.
  4. (literally) To spew saliva as froth; (figuratively) to rage, vent one's anger.
  5. To cover with froth.

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