난데없이

Korean

Etymology

Univerbation of 난 (nan, “which has appeared”, past adnominal form of 나다 (nada, “to appear”)) +‎ 데 (de, “place”) +‎ 없이 (eopsi, “without”): "without place to appear".

Pronunciation

(SK Standard/Seoul) IPA^(key): [ˈna̠(ː)nde̞ʌ̹pɕ͈i]
Phonetic hangul: [난(ː)데업씨]
- Though still prescribed in Standard Korean, most speakers in both Koreas no longer distinguish vowel length.

Romanizations
Revised Romanization^?	nandeeopsi
Revised Romanization (translit.)^?	nandeeobs'i
McCune–Reischauer^?	nandeŏpsi
Yale Romanization^?	nāntey.eps.i

Adverb

난데없이 • (nandeeopsi)

(of something that appears or approaches) out of the blue, out of thin air, all of a sudden
Coordinate term: 간데없이 (gandeeopsi)

난데없이 나타나다 ― nandeeopsi natanada ― to appear out of the blue

난데없이 들려 오다 ― nandeeopsi deullyeo-oda ― to be heard all of a sudden