The most common and most likely answer to this crossword clue is the 6 letter word DEADLY
I've seen this crossword clue in Financial Times
D
E
A
D
L
Y
More clues leading to the result DEADLY
- Awful delay after day in terminal
- Insensitive heartless bonk is fatal
- Extremely boring delay, with first bit of day wasted
- Fatal drive around Llandovery with all losing heart
- Lead widespread in the outskirts of Derby is very dangerous
- Lethal tablet swallowed by father only half dissolved
- Having grave consequences
- Lethal compound of lead lining walls in deanery
- Lethal dose heartlessly given by deranged lady
- Gluttony may be so fatal
Buddy explains!
The straight part
We know that "Extremely boring" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case extremely boring = deadly.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 DEADLY mean?
DEADLY adjective- Subject to death; mortal.
- Causing death; lethal.
- Aiming or willing to destroy; implacable; desperately hostile.
- Very accurate (of aiming with a bow, firearm, etc.).
- Very boring.
- Excellent, awesome, cool.
- Fatally, mortally.
- In a way which suggests death.
- Extremely.