fleeting, fleetingly brief
Vous voyez, pour un bref moment fugace, j'avais oublié que j'étais riche.
You see, for one brief fleeting moment, I had forgotten that I was rich.
— Le Loup de Wall Street (2013)
La vie est fugace.
Life is fleeting.
Mon bonheur a été fugace.
My happiness was fleeting.
La jeunesse fugace ?
Fleeting youth?
— Lust, Caution (2007)
Leur beauté est spectaculaire, mais fugace.
Their beauty is spectacular, but fleeting.
— Crazy Rich Asians (2018)