The most common and most likely answer to this crossword clue is the 8 letter word AIRTIGHT
I've seen this crossword clue in Independent
A
I
R
T
I
G
H
T
More clues leading to the result AIRTIGHT
- Song by a drunk affording no escape...
- Attitudewith no weaknesses
- Flawless screen getting smashed
- Sealed off main road just outside entrance to town
- It’s divided and put in properly sealed
- Look mean, having no weaknesses
- Flawless atmosphere and mean
- Impenetrable expression by drunk
- Song describing drunk with no means of escape
- Top Republican, drunk beyond question
Buddy explains!

The straight part
We know that "with no means of escape" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case with no means of escape = airtight.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 AIRTIGHT mean?
AIRTIGHT adjective- Impermeable to air or other gases.
- Having no weak points or flaws.
- (of a person) Highly reserved in some matter, particularly tight-lipped or tight-fisted.