The most common and most likely answer to this crossword clue is the 6 letter word ABRUPT
I've seen this crossword clue in The Times
A
B
R
U
P
T
More clues leading to the result ABRUPT
- Curt, put bar off
- Sudden bar redevelopment put off
- A conspirator ignoring us keeps quiet, using minimal language
- Short bar put out
- Sailor right about good time being unexpected
- Sudden pressure in routine, following sailor
- British sport fitting screens without warning
- Page in article, very dry and short
- Rude sailor visiting priest during period of sexual excitement
- British Rail’s happy for heartless worker to be outside — unexpected?
Buddy explains!
The straight part
We know that "without warning" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case without warning = abrupt.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 ABRUPT mean?
ABRUPT noun- Something which is abrupt; an abyss.
- To tear off or asunder.
- To interrupt suddenly.
- Broken away (from restraint).
- Without notice to prepare the mind for the event; sudden; hasty; unceremonious.
- Curt in manner.
- Having sudden transitions from one subject or state to another; unconnected; disjointed.
- Broken off.
- Extremely steep or craggy as if broken up; precipitous.
- Suddenly terminating, as if cut off; truncate.