The most common and most likely answer to this crossword clue is the 6 letter word CAVEAT
I've seen this crossword clue in Financial Times
C
A
V
E
A
T
More clues leading to the result CAVEAT
- Pussy is crossing avenue — caution!
- Warning feline’s gobbling veal left out
- Beware of waste regularly found at bottom of grotto
- Warning – with a lot of sparkling wine have some food
- Warning! Tiger possibly bitten half the street!
- A doctor endlessly probing moggie’s condition
- Warning: “Vacate complex!”
- Pet having a suitable doctor brought in clipped as a proviso
- Warning of cold front of Arctic temperature, including hail
- Notice army retreating behind hiding-place?
Buddy explains!

The straight part
We know that "condition" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case condition = caveat.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 CAVEAT mean?
CAVEAT noun- A warning.
- A qualification or exemption.
- A formal objection.
- A notice requesting a postponement of a court proceeding.
- To qualify a statement with a caveat or proviso.
- To formally object to something.
- To issue a notice requesting that proceedings be suspended.
- To warn or caution against some event.