Hangul syllable Reup

It supplies the word’s final sound, not a separate idea. 무릎을 꿇다 means “kneel” or “submit”; 무릎을 치다 describes striking a knee in sudden realization or joy.

At word end, ㅍ is a clipped p (무릎 [무릅]); before 이, it shifts into the next syllable: 무릎이 [무르피].

The first official Hangul record (1443) credits King Sejong of Joseon with creating 28 letters to write Korean; the 1446 Hunminjeongeum book explains their sounds and says Korean speech differed from Chinese. Unicode breaks 릎 into initial ᄅ, vowel ᅳ, and final ᇁ.