The most common and most likely answer to this crossword clue is the 7 letter word AD-LIBS
I've seen this crossword clue in The Times
A
D
-
L
I
B
S
More clues leading to the result AD-LIBS
- Odd remarks from bad lads written on outside of one book
- Like featuring revolting Bild off- the-cuff comments?
- They’re creatively said — line’s blown initially
- Advanced money including pound for unscripted stuff
- Improvises using present day progressive party members
- Awkward Basil starting to deliver unrehearsed speeches
Buddy explains!

The straight part
We know that "Odd remarks" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case odd remarks = ad-libs.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.