The most common and most likely answer to this crossword clue is the 9 letter word MARROWSKY
M
A
R
R
O
W
S
K
Y
More clues leading to the result MARROWSKY
Buddy explains!
The straight part
We know that "A lapse in what’s been said" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case a lapse in what’s been said = marrowsky.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.