The most common and most likely answer to this crossword clue is the 7 letter word INSTANT
I've seen this crossword clue in The Times
I
N
S
T
A
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T
More clues leading to the result INSTANT
- Present minute coffee, say
- Immediate flash.
- Occupying street, perhaps a worker’s moment
- Second stone collected by relative cracks it open
- Needing break, homeworker tours street for a bit
- Flash type of coffee
- Second sin St Anthony’s concealed
- Without hesitating spinster stripped naked in front of six-footer
- Laurel’s immersed in international books for a moment
- Coffee time?
Buddy explains!

The straight part
We know that "moment" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case moment = instant.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 INSTANT mean?
INSTANT noun- A very short period of time; a moment.
- A single, usually precise, point in time.
- A beverage or food which has been pre-processed to reduce preparation time, especially instant coffee.
- A camera that uses self-developing film to create a chemically developed print shortly after the photograph is taken.
- Impending; imminent.
- Urgent; pressing; acute.
- Insistent; persistent.
- Present; current; extant.
- Occurring immediately; immediate; present.
- Lasting for a short moment; momentary; short-lived.
- Very quickly and easily prepared.
- Of the current month.
- At once; immediately.