-어라

Etymology 1
From  +.

Usage notes

 * For vowel harmony, contractions, and allomorphy, see.
 * cannot be used with the tense markers and.

Etymology 2
From  +.

The fusion is sometimes analyzed as already having occurred in Middle Korean.

Usage notes

 * For vowel harmony, contractions, and allomorphy, see.
 * cannot be used with the tense markers and.
 * The  claims that this ending can only occur on adjectives, but Jeong 2001 gives several examples in which it is undeniably applied to verbs. See also the quotations above of verbal usage in major contemporary literature.