The most common and most likely answer to this crossword clue is the 8 letter word FLEETING
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More clues leading to the result FLEETING
- Short-lived naval force in entrance to Gulf
- Short-lived navy beheaded John, perhaps
- Brief run can end in jog
- Brief navy in Gulf capital
- Fugitive escaping without time
- Peg held up by affair that’s brief
- Fugitive getting away with time inside…
- Time, in making a run for it, passing swiftly
- Brief support reversed amid affair
Buddy explains!

The straight part
We know that "brief" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case brief = fleeting.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 FLEETING mean?
FLEETING verb- To float.
- To pass over rapidly; to skim the surface of.
- To hasten over; to cause to pass away lightly, or in mirth and joy.
- To flee, to escape, to speed away.
- To evanesce, disappear, die out.
- To move up a rope, so as to haul to more advantage; especially to draw apart the blocks of a tackle.
- (of people) To move or change in position.
- To shift the position of dead-eyes when the shrouds are become too long.
- To cause to slip down the barrel of a capstan or windlass, as a rope or chain.
- To take the cream from; to skim.
- Passing quickly; of short duration.