Cryptic crossword clue
Manoeuvre’s putting second section before first: sweet! 3,3

The most common and most likely answer to this crossword clue is the 7 letter word TIC-TAC

T
I
C
-
T
A
C

Buddy explains!

The straight part
We know that "sweet!" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case sweet! = tic-tac.
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 TIC-TAC mean?

TIC-TAC noun
  1. A system of sign language used by bookmakers at racecourses to communicate odds and bets; an associated group of words for each sign

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