The most common and most likely answer to this crossword clue is the 4 letter word FOND
I've seen this crossword clue in Financial Times
F
O
N
D
Buddy explains!

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 FOND mean?
FOND verb- To have a foolish affection for, to be fond of.
- To caress; to fondle.
- (chiefly with of) Having a liking or affection (for).
- Affectionate.
- Indulgent.
- Outlandish; foolish; silly.
- Foolish; simple; weak.
- Doted on; regarded with affection.
- The background design in lace-making.
- Brown residue in pans from cooking meats and vegetables.
- A group of records having shared provenance.
- Foundation; bottom; groundwork.
- Fund, stock, or store.