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이서 (Yi-Seo) means “joyful, harmonious · auspicious, lucky omen” when written 怡瑞. It is one of the most popular names for babies born in Korea in the 2020s. Its characters carry the elements 火 Fire, 金 Metal, which matters when a name is chosen to balance a birth chart.
| Hangul | Hanja | Romanised | Meaning | Element |
|---|---|---|---|---|
| 이 | 怡 | i | joyful, harmonious | 🔥 火 Fire |
| 서 | 瑞 | seo | auspicious, lucky omen | ✨ 金 Metal |
이서 rose to the top of the girls' charts in the 2020s, part of a wider taste for light, vowel-led names. 怡瑞 joins 'joyful' with 'auspicious', and because 이 (怡) is also a common surname sound, the name feels effortlessly Korean. It is easy for non-Koreans to say: ee-suh.
Revised Romanisation: iseo (i-seo). The spelling most Koreans with this name use abroad: Yi-Seo. Korean syllables have equal length — say each one evenly, no stress.