The most common and most likely answer to this crossword clue is the 8 letter word BRICKBAT
I've seen this crossword clue in The Times
B
R
I
C
K
B
A
T
More clues leading to the result BRICKBAT
- Reliable person beginning to bridle at critical remark
- Blunt criticism from decent chap to striker
- Criticism appropriate for stonewalling cricketer
- Blunt criticism of decent chap joining club
- Criticism for decent chap leading strike
- Critical remark made by stalwart over club
- Insult good chap attending club
- Blunt criticism from stalwart that goes to club
- Blunt criticism of brother, so nasty, joining club
- Block off building with club and bit of stick
Buddy explains!

The straight part
We know that "critical remark" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case critical remark = brickbat.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 BRICKBAT mean?
BRICKBAT noun- A piece of brick used as a weapon, especially if thrown, or placed in something like a sock and used as a club.
- A criticism or uncomplimentary remark.
- To attack by throwing brickbats.
- To assail with criticism.