The most common and most likely answer to this crossword clue is the 12 letter word CHATTERBOXES
I've seen this crossword clue in The Times
C
H
A
T
T
E
R
B
O
X
E
S
More clues leading to the result CHATTERBOXES
Buddy explains!
The straight part
We know that "liberal speakers" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case liberal speakers = chatterboxes.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 CHATTERBOXES mean?
CHATTERBOXES noun- An artificial intelligence program intended to simulate interactive conversation with another person
- One who chats or talks to excess.
- A cootie catcher (children's fortune-telling device).