‘ㅅ’ 불규칙

For a few verb and adjective stems that end in ㅅ, ㅅ is omitted when added to an ending that begins with a vowel.

Although the stems of 벗다 (to take off), 웃다 (to laugh), and 씻다 (to wash) end in ㅅ they are conjugated regularly.

In Korean, vowels will often combine when they meet. For example, 배우+어요 combine to become 배워요.. However, in the case of irregular ㅅ stems, even though vowels may meet after the ㅅ is deleted, they do not combine.

For a few verbs that end with ㅅ and the ending start with a vowel, ㅅ is omitted.

• List of verb not affected by the ㅅ irregular rule, these are conjugated normally 잇다, 낫다, 붓다, 긋다, 젓다 and 짓다.