自不量力 [－－－－]

Jyutping zi6 bat1 loeng6 lik6
Pinyin zì bù liàng lì

Definitions (CC-CEDICT)
  1. to overestimate one's capabilities (idiom)
Definitions (Wiktionary)
  1. phrase, idiomatic
    to overestimate one's capabilities; to not know one's own limitations; to be overconfident
    (syn.) 螳臂当车, 夸父逐日, 螳臂當車
Definitions (Kaifangcidian)
  1. （沒有對應漢語詞彙）