間抜け
Common
I-adj
Noun
1
noun (common) (futsuumeishi)
tonto;simple;mentecato;bobo
1
adjectival nouns or quasi-adjectives (keiyodoshi)noun (common) (futsuumeishi)
stupid;foolish;idiotic;inane
あいつはクラスでいちばんのまぬけだ。
He is the dumbest kid in the class.
2
noun (common) (futsuumeishi)
fool;idiot;blockhead;half-wit