The most common and most likely answer to this crossword clue is the 8 letter word INGRATES
I've seen this crossword clue in The Guardian
I
N
G
R
A
T
E
S
More clues leading to the result INGRATES
- They don’t appreciate popular Government’s initial taxes
- They don’t appreciate empty art framed by French painter
- Those showing no appreciation could make one angriest
- They don’t appreciate where fires get started
- People not happy with fires burning here?
- ... losers on a new rig creating setback
- Thankless types where the Ashes end up?
Buddy explains!
The straight part
We know that "They don’t appreciate" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case they don’t appreciate = ingrates.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 INGRATES mean?
INGRATES noun- An ungrateful person