Ieung

Ieung (letter: ㅇ; name: 이응), sometimes also called noieung to clearly distinguish from yennieung, is a consonant letter of the Korean alphabet, Hangul. It is silent when used at the beginning of a syllable (it is a consonant placeholder in vowel letters). However, ㅇ might take on the glottal stop[ʔ] sound on some occasions. It takes on the [ŋ] sound when it is the ending consonant in a syllable.