The most common and most likely answer to this crossword clue is the 2 plus 4 letter word ON TIME
I've seen this crossword clue in The Times
O
N
T
I
M
E
More clues leading to the result ON TIME
- Working spell without delay
- Promptly issue denial that's taken up
- Chap briefly called into unit when expected
- Sharp, tiny boy wearing one
- Sharp mint munched in periphery of office
- Release number with backing not lagging
- Prompt outburst of emotion, not love
- Having taken the stage, send up prompt
- In front, I’m extremely sharp
- Coming from seafront, I’m expected punctually
Buddy explains!
The straight part
We know that "without delay" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case without delay = on time.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.