The most common and most likely answer to this crossword clue is the 8 letter word AMICABLE
A
M
I
C
A
B
L
E
More clues leading to the result AMICABLE
- Benign power supply taken under a road
- Friendly email sent about place for advice
- Friendly taxi taking a long way round?
- Friendly guy introduced by a note
- Is the speaker on type of TV friendly?
- . Good-natured question politician once asked himself
- In the morning one guy is good-natured
- Friendly, am I? — Vince
- Without Charlie it would still be warm
- In the morning one party leader is good-natured
Buddy explains!

The straight part
We know that "Warm" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case warm = amicable.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 AMICABLE mean?
AMICABLE adjective- Showing friendliness or goodwill.