evanescent
/ˌɛvəˈnɛsənt/Definitions
1. adjective
Lasting for a very short time; fleeting, transitory.
“The evanescent beauty of the sunset was a breathtaking sight.”
2. noun
Something that lasts for a very short time; a fleeting thing.
“The evanescent nature of summer is a bittersweet reminder of its approaching end.”
3. adverb
In a fleeting or transitory manner.
“The fire burned evanescently, leaving behind only a faint scent of smoke.”