Category:Irregular verbs

Irregular Korean verbs and adjectives require changes to the spelling of the verb stem when conjugating with some ending patterns.

For example, the stem ending 받침 may sometimes change (e.g. ㄷ irregular verbs) or sometimes disappear (e.g. ㄹ irregular verbs).

The definition of "irregular" is somewhat arbitrary. For example, vowel contractions are not generally considered irregular even if the stem vowel itself completely disappears (but see 으 irregular verbs).