The most common and most likely answer to this crossword clue is the 9 letter word MOLLIFIED
I've seen this crossword clue in Financial Times
M
O
L
L
I
F
I
E
D
Buddy explains!
The straight part
We know that "Placated" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case placated = mollified.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 MOLLIFIED mean?
MOLLIFIED verb- To ease a burden, particularly worry; make less painful; to comfort.
- To appease (anger), pacify, gain the good will of.
- To soften; to make tender