The kanji 潤 generally conveys the idea of "moist," "wet," "to moisten," "to be rich," "to be enriched," "to be lubricated," or "to thrive." It often implies a sense of abundance, prosperity, and ease. It suggests something that is not dry or lacking, but rather filled, flowing, and flourishing.

・On-yomi (音読み): ジュン (jun) ・Kun-yomi (訓読み): うるお.う (uruo.u) (to be moist, to be enriched), うるお.い (urui) (moisture, richness), うるお.す (uruo.su) (to moisten, to enrich)

⚫︎ 加湿器で部屋が潤う Translation: The room becomes humidified by the humidifier. ⚫︎ 経済が潤う Translation: The economy prospers. ⚫︎ 肌の潤いを保つ Translation: To maintain the moisture of the skin.

The kanji 潤 is a phono-semantic compound (形声文字). It combines the water radical 氵 (also written as 水, meaning "water") with the phonetic component 閏. 閏 (jun) originally meant "intercalary" or "leap" (as in leap year), suggesting filling in or adding to. The water radical 氵 gives the character its meaning related to liquid and moisture, while 閏 provides the sound and hints at the idea of "filling" or "enriching." Therefore, 潤 reflects the concept of water filling something, making it moist and abundant.