The most common and most likely answer to this crossword clue is the 6 letter word PATTER
I've seen this crossword clue in The Guardian
P
A
T
T
E
R
More clues leading to the result PATTER
- Glib talk as regular arrangement not completed
- Talk presented in short order
- Model’s endless
- Curtail arrangement for talk
- Model’s endless glib talk
- Spiel Father Time interrupts
- Gently strike to the empty end of soccer pitch
- Spiel from salesman — one being nice to your dog?
- Largely model sales talk?
- Father has time for idle talk
Buddy explains!

The straight part
We know that "glib talk" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case glib talk = patter.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 PATTER mean?
PATTER noun- A soft repeated sound, as of rain falling, or feet walking on a hard surface.
- To make irregularly repeated sounds of low-to-moderate magnitude and lower-than-average pitch.
- To spatter; to sprinkle.
- Glib and rapid speech, such as from an auctioneer or a sports commentator.
- To speak glibly and rapidly, as does an auctioneer or a sports commentator.
- To repeat the Lord's Prayer.
- To pray.
- To repeat hurriedly; to mutter.
- One who pats.