This is the 11133rd most frequent Korean word.
기쁜
Joyful; glad.
In this sentence, '기쁜' is used as an attributive adjective to describe the noun '날' (day).
오늘은 정말 기쁜 날이에요.
Today is truly a joyful day.
Here, '기쁜' is conjugated into its past tense form '기뻤어요,' which functions as a predicate adjective in the sentence.
그 소식을 듣고 아주 기뻤어요.
I was very glad to hear the news.
In this example, '기쁜' modifies the noun '마음' (heart), specifying the emotion associated with the heart.