愣头愣脑 (愣頭愣腦) lèng tóu lèng nǎo

lèng tóu lèng nǎo set phrase rash; reckless
Domain: Idiom 成语 , Subdomain: , Concept:
Notes: (CC-CEDICT '愣頭愣腦'; Guoyu '愣頭愣腦')