1. lasting for a very short time; fleeting or transitory
Usage: formal or literary
2. (of a plant or animal part) falling off or disappearing early in development
Usage: botany, zoology

Examples

• The beauty of cherry blossoms is fugacious, lasting only a few weeks each spring.
• Her fugacious smile disappeared as quickly as it had appeared.
• The fugacious nature of youth makes us appreciate it more as we age.
• In botany, fugacious sepals fall away before the flower fully opens.
• The fugacious scent of the perfume faded within minutes.
• He felt a fugacious sense of hope before reality set in again.