The most common and most likely answer to this crossword clue is the 8 letter word LEONARDO
I've seen this crossword clue in The Daily Telegraph
L
E
O
N
A
R
D
O
More clues leading to the result LEONARDO
- No ordeal disrupted Renaissance polymath
- Energy fuels mad Orlando artist
- Age concealed by fat old artist
- Christmas rejected by roadwork painter
- Bacon endlessly inspiring one new artist
- A lord, one unlikely to be an artist
- Sign on – one way to feed artist
- Energy fuelling crazed Orlando genius
- Real don, exceptional old genius in many fields
- Age taken by fat old painter?
Buddy explains!
The straight part
We know that "genius in many fields" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case genius in many fields = leonardo.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.