愣頭愣腦 [－头－脑]

Jyutping ling6 tau4 ling6 nou5
Pinyin lèng tóu lèng nǎo

Definitions (CC-CEDICT)
  1. rash
  2. impetuous
  3. reckless
Definitions (Wiktionary)
  1. phrase, idiomatic
    rash; hotheaded; reckless
  2. phrase, idiomatic
    slow in movement; obtuse; stunned
Definitions (Kaifangcidian)
  1. （沒有對應漢語詞彙）