夜郎自大 [－－－－]

Jyutping je6 long4 zi6 daai6
Pinyin yè láng zì dà

Definitions (CC-CEDICT)
  1. lit. Yelang thinks highly of itself (idiom)
  2. fig. foolish conceit
Definitions (Wiktionary)
  1. phrase, idiomatic
    to be ignorant and arrogant; to be self-deluded
Definitions (Kaifangcidian)
  1. （沒有對應漢語詞彙）