Passing quickly; ephemeral: a fleeting glimpse; a fleeting interest in the campaign. (adjective)
American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
Use "fleeting" in a sentence
"His rivals have criticized him for failing to convene a meeting of the panel, using that fact to highlight what they call fleeting foreign policy experience."
"Just exuberant bliss, he supposed, an expression of fleeting pleasure, not really a binding declaration."
"And I think the older we get, the more we cherish these times together, knowing how few and far between they are, and how fleeting is our time on this earth."