The most common and most likely answer to this crossword clue is the 10 letter word THOUGHTFUL
I've seen this crossword clue in The Guardian
T
H
O
U
G
H
T
F
U
L
More clues leading to the result THOUGHTFUL
Buddy explains!

The straight part
We know that "Kind" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case kind = thoughtful.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 THOUGHTFUL mean?
THOUGHTFUL adjective- Demonstrating thought or careful consideration.
- Demonstrating kindness or consideration for others.