The word **飞逝** (fēi shì) is a compound formed by combining two characters with related meanings to create a new, metaphorical concept. The first character, **飞** (fēi), means "to fly," implying speed and movement through the air. The second, **逝** (shì), means "to pass" or "to elapse," often used for the passage of time or flowing water. Together in a coordinative (or parallel) structure, they form a vivid verb meaning "to flit by" or "to pass swiftly," most commonly used figuratively to describe how time flies or moments vanish rapidly, as if taking wing.